The human body has hundreds of muscles. The three types are skeletal muscles, smooth muscles and cardiac, or heart muscles. Each kind of muscle has a special job to do. The skeletal muscles are attached to the bones; they actually hold the skeleton together. Strong cords, called tendons , help connect these muscles to the bones. Skeletal muscles give us strength and allow us to move in many ways. If you look at skeletal muscles through a microscope, you will see that it has bands of fibers that look like stripes . These stripes are called striations. Skeletal muscles usually move because the brain has sent a conscious message to them telling them what to do. This is called voluntary movement. Another type of muscle is smooth muscle. Unlike skeletal muscle, smooth muscle does not have striations. This is found in organs such as the stomach, the bladder , the lungs and the eyes. Smooth muscles are smaller than the skeletal muscles and they move involuntarily. The brain tells these muscles what to do, but we aren't even aware of it. For example, we don't have to think about breathing or digesting food. The smooth muscles just do their jobs automatically. For this reason smooth muscles are sometimes called involuntary muscles. Like smooth muscle, cardiac muscle also works involuntarily. It is a very thick muscle that is found only in the walls of the heart. Its job is to pump blood out of the heart and into blood vessels called arteries . The arteries help carry the blood to all parts of the body. When the cardiac muscles relax, they let blood back into the heart. Cardiac muscles have striations, just like skeletal muscles do. Skeletal muscles and heart muscles are alike because _ . A) both can move voluntarily B) both are thick muscles C) both are bigger than smooth muscles D) both have stripes called striations
D
(Question)
Morocco, a North African kingdom, is on the south of the Mediterranean Sea and on the east of the Atlantic Ocean, between Algeria and Western Sahara. Morocco became independent from France in 1956. People in Morocco speak Arabic, which is the official language. Some people speak French and Spanish. 98.7% of the people believe in Islam. The capital city of Morocco is Rabat. Casablanca, in the north of this country, is the largest city. The famous movie Casablanca tells a story which happened in this city. It seldom rains in Morocco. The coastal cities are not cold in winter (around 16degC) and not hot in summer (around 22degC). In the inland areas, winters are colder and summers warmer. High up in the mountains the temperature can be as cold as -17.8degCin winter, and mountain tops are covered with snow most of the year. The population of Morocco is about 31,000,000. Most children in Morocco go to primary school, but only about 39% of them go to secondary school. However, this country has one of the oldest universities in the world, hundreds of years older than Oxford University. It is Al Qarawiyin University in Northern Morocco, which was founded in AD 859. Which of the following word best describe the weather in Morocco? A) Rainy. B) Hot. C) Various. D) Cold.
(Answer)
C
Ques: Enjoy a museum visit with your class! Available Programs: Art Tells a Story: By looking at the subject matter and by drawing from personal experiences, students can find the story in some works of art. ( All grades) Learning to Look: An interactive tour that explores a variety of art using storytelling, movements, music, games, and other techniques helps introduce children to a museum. (Preschool~ Grade 3) Native American Collection: This program explores relationships that exist between art, culture, the geographic location and natural resources. Students will see a bowl made by Maria Martinez, a Towa storyteller, a Northwest coast mask, and Inuit clothing. ( For Grades 2~5) The Language of Art: Classes are welcomed into the museum to take part in an interactive tour of American Art. It gives participants a new set of vocabulary while helping them feel comfortable. Art-on-the-Move: Teachers may borrow suitcases filled with art objects. Free organizations with Education Membership. Planning Your Visit: Booking: Booking is necessary for all tours and programs. Please book at least a week in advance. Teachers are encouraged to organize self-guided visits for their classes during public hours. Tour Hours: Tours can be organized between 9:30 a.m. and 5:00 p.m. on weekdays. Program Fees: Tours are free for those with Education Membership. There is a charge of $6 per student of non-member organizations. Tour with art activities cost $12 per student (non-members) or $10 per student (members). Chaperones :We require one adult chaperone for every 10 children. Chaperones help to make your museum visit a success. A chaperone must pay $5 admission. Lunch: We regret that no lunch facilities are available at the museum. Museum Rules: Don't touch works of art. Don't take photographs. Ask questions. Look, and then LOOK again! Enjoy! If teachers want their students to learn about what a museum is, they will choose _ . A) Art Tells a Story. B) Learning to Look C) The Language of Art. D) Native American Collection.
Ans: B
Ques:Back in the 1860s, a British scientist named Henry Walter Bates noticed something interesting in the animal world: a kind of butterfly, Common Mormon, can change the pattern on its wings so that it looks like another butterfly species, the Common Rose, which is poisonous for birds to eat. Bates argued that animals develop this ability to protect themselves from being eaten. This theory had been widely accepted by scientists. But one question remains: how do these animals manage to do that? After more than 150 years, scientists are finally able to answer that question--it is all down to a gene called "doublesex", according to a study published on March 6 in the journalNature. In fact, scientists have long known that genes are responsible for this useful ability. But until the new study, scientists hadn't been able to find out which genes in particular were responsible. Scientists at the University of Chicago compared the genetic structures of the Common Mormons that changed their wing patterns with those of ones that did not. And all the results pointed to a single gene, "doublesex". This was much to the scientists' surprise. They used to expect that something as complex as this would be controlled by many different genes. For example, one gene would control the color of the upper part of the wing, one would do so for the lower part. However, the "doublesex" gene doesn't quite do everything by itself. Instead, it acts like a switch--it "tells" other genes to change the wing patterns. Isn't that clever? Scientists believe that this special ability of the "doublesex" gene on Common Mormon was developed throughout the long history of evolution. "The harmless species gains an advantage by resembling something predators avoid," Sean Carroll, a scientist toldNature. "it was obvious evidence for natural selection. " What is the best title of this passage? A) How Common Mormons stay safe B) How butterflies changed wings' pattern C) What American scientists discovered D) What genetic structures of butterflies have

Ans:
A