Read the following article and select the best answer. Article: American English is full of colorful expressions. One such expression is to touch all bases. There are four bases in baseball - first, second, third and home plate. When a baseball player hits the ball, he must run to each base - in order - and touch it with his foot. It is the only way to get a point. If the player hits the ball and fails to touch all the bases, the point will not be counted. The importance of touching all the bases was shown at the start of the 1974 baseball seasons. Hank Aaron was a player with the Atlanta Braves team. He was trying to find the record for hitting the most home runs . Aaron needed just one home run to be well matched with the record held by Babe Ruth, the greatest hitter in baseball history. Aaron got that home run the very first time he had a chance to hit the ball. That gave him 714 home runs - the same as Babe Ruth. After that day, baseball fans held their breath every time when it was Hank Aaron's turn to hit. When would he hit home run number 715? The wait was not long. In the second week of the season, Aaron again hit the ball over the wall. He had beaten Babe Ruth's record. But first, he had to run around the four bases. The other players on his team watched carefully to make sure he touched each one. So, to touch all bases means to do what is necessary to complete an activity. The expression is used to business and politics. No business deal or political events are really complete until you discuss all the problems involved. Or, as it is said, until you touch all bases. Question: When a baseball player hits the ball, he must _ to get a point. - run to each base freely - touch the home plate first - touch all the bases with his hands - run to each base in order and touch it with his foot
run to each base in order and touch it with his foot

Read the following article and select the best answer. Article: In nature, you may see many insects and animals of different colors. Have you ever wondered why? Locusts are super delicious food for birds,but it is not always an easy job for birds to catch them.It is neither because locusts are good jumpers or runners nor because they are smarter than their enemies. The reason is that the colors of locusts change with the colors of crops . When crops are young,locusts look green. But when autumn comes, locusts change to the yellow and brown color as crops do. Brown bears,tigers and other animals move quietly through forests. They can't be seen easily by their enemies. This is because they have colors similar to the trees. For the same reason, polar bears that live on a land of snow and ice are white. Butterflies and bees living among the flowers are colorful like flowers. Soil insects are mostly dark-colored and they live under the soil in a dark and wet environment. However, insects with colors different from plants can easily be found and eaten by others. So in order to _ they have to hide themselves in the daytime and appear only at night. Have you ever noticed some even stranger acts? The ink fish in the sea can send out some very black ink when it faces danger. As the ink spreads over , its enemies will find themselves suddenly in a dark world. At the same time the ink fish immediately swims away. That is how it keeps itself safe though it is not strong at all. Question: The ink fish _ so that its enemies will not see it? - changes its color - makes the water around it black - appears only at night - hides itself in the sea rocks
makes the water around it black

Q: Read the following article and select the best answer. Article: Antifreeze is a liquid that is added to water to keep it from freezing. When water freezes and turns to ice,it expands .The force of water expanding is so great that it will break the hardest metal.Water is used in car engines to keep them cool while they run,and if this water is allowed to freeze in winter it can break the iron block of the engine.That is why antifreeze is necessary. Water freezes at 0degC;the usual kind of antifreeze will not freeze until the temperature is-40degC.A mixture of five parts of water and four parts of antifreeze will prevent freezing at-18degC;four parts of water and five parts of antifreeze reduce this to -22degC. Alcohol is a kind of good antifreeze,but when the air is running it becomes hot and the alcohol boils away,so it must be changed very often.Most people use antifreeze that does not boil away when the engine is running.There are several chemicals that do this.One of the most popular is called ethylene glycol. Question: We use antifreeze in order to _ . - keep alcohol in water - stop ice from becoming water - make the freezing point of water lower - raise the freezing point of water
A: make the freezing point of water lower

*Question*
Read the following article and select the best answer. Article: Successful students have good study habits. They have these habits in all of their lessons. Read about each study habit. Work to develop any study habit you do not have. Try not to do too much studying at one time. If you try to do too much studying at one time, you will get tired easily and your studying will not be very effective. Taking short breaks will help get back your mental energy. Try to study at the same times each day. Studying at the same times each day makes it become a regular part of your life, just like sleeping and eating. When a study time comes up during the day, you will be mentally prepared to begin studying. Set clear goals for their study times. Goals will help you stay focused and check your progress. Simply sitting down to study has little value. You must be very clear about what you want to get during your study time. Start studying when planned You may not start your studying on time because you don't like a task or think it is too hard. If you do this, you are _ . If you procrastinate for any reason, you will find it difficult to get everything done when you need to. You may rush to make up the time you wasted getting started, resulting in careless work and mistakes. Work on the task they find most difficult first. Your most difficult task will require the most effort. Start with your most difficult task since this is when have the most mental energy. Review their notes before beginning a task. Reviewing your notes can help you make sure you are doing a task correctly. Also, your notes may include information that will help you complete a task. Review their schoolwork over the weekend. Yes, weekends should be fun in time. But there is also time to do some review. This will help you be ready to go on Monday morning when another school week begins. Question: Why should we work on the most difficult task first? - Because it is easy for us to solve it correctly - Because we have more mental energy than any other time - Because we don't feel it more difficult - Because it requires the most time
**Answer**
Because we have more mental energy than any other time