Question: Read the article and select the best answer. Article: One year ago Bertha and Grace became close friends at a college in Dartmouth. One day, Bertha said that her aunt Margaret had invited her to spend the summer holiday with her. And they would have picnics and parties as well. But Grace told Bertha that she planned to stay in Clarkman's bookstore until the new term began. Grace had to do something to feed herself because her parents died many years ago. Bertha watched her friend's pale face. Just then she got a good idea. The next day when Grace came back, Bertha showed her an invitation letter from her aunt Margaret. "Grace, would you like to spend your holiday with us? I will help you find a part-time job in our town." Grace cried after reading it. "Grace, please spend the holiday with me, or Margaret will be disappointed . I want you to be happy," Bertha said. The holiday quickly passed by, and finally one letter from Margaret came to Bertha. "Bertha, Grace is the sweetest girl in the world, and I am very grateful to you for sending her here." Question: Margaret was Bertha's _ according to the passage. Options: A: aunt B: grandmother C: mother D: teacher
Answer: A

Question: Read the article and select the best answer. Article: Are you carrying too much on your back at school? I'm sure lots of children of your age will say "Yes". Not only the students in China have this problem, but children in the United States also have heavy school bags. Doctors are starting to worry about young students' back and neck because their school bags are too heavy for them. "It's hard for me to go upstairs with my heavy bag," said Rick Hammond, an ll-year-old student in the USA. Rick is among students who have school bags with two straps ,and many other students choose rolling bags. But even with rolling bags ,getting upstairs is still a problem for children .Doctors say students should carry no more than 10% to 15% of their own body weight . Scott Bautch, a back doctor, said children under Grade 4 should carry no more than 10% of their weight and older children shouldn't stay with over 15% , because their bodies are still growing. Teachers and parents should do some things to help children. And the best answer is to have less homework! Question: From the passage we cam know that _ . Options: A: only children in China carry too heavy school bags. B: children in other countries don't carry too heavy bags. C: both children in China and the USA carry too heavy school bags. D: only children in the USA carry too heavy school bags.
Answer: C

Question: Read the article and select the best answer. Article: Space vegetables are grown from seeds that have been taken to space and brought back to the earth. The seeds are affected by the radiation and low gravity in space. When they are brought back to the earth, these seeds produce vegetables that are bigger and healthier than normal vegetables. However, some people worry about eating space vegetables. They think that space vegetables might not be good for us and could make us get sick because of the radiation in space. However, people should not be frightened because space vegetables are very healthy. Here are some facts that you should know about space vegetables. Space vegetables are grown from seeds that are carefully chosen. When seeds are brought back from space, they are tested to make sure that they will be safe to eat. Space vegetables are better for you than normal vegetables. For example, space tomatoes stay fresh for twenty days, which is one week longer than normal tomatoes. After genetically modified food appeared in the market, people worried that they were eating unknown things. For example, if nut genes are put inside potatoes, people allergic to nuts might get sick from eating these potatoes because they do not know they are also eating nuts. Unlike genetically modified food, space vegetables have not been genetically changed. This means that no new genes are put into the vegetables. Therefore, there are no dangers of eating something unknown. Question: The writer wants to tell us that _ . Options: A: space vegetables are grown in space B: everybody worries about eating space vegetables C: space vegetables are safe and good for people to eat D: space vegetables may bring illness to us because of the radiation in space
Answer:
C