内容正文:
课时作业(7) A卷 基础巩固
Ⅰ.单句语法填空
1.The famous film star made no response (respond) to the questions asked by the reporters.
2.She took advantage of the children's absence to tidy their rooms.
3.They defended themselves against being attacked (attack).
4.The schools must adopt (adoption) new methods of teaching foreign languages.
5.Scientists are still working on/at inventing methods of reaching outer space.
6.You must keep these points in mind while setting (set) your goals.
7.It was so interesting a film that I saw it twice.
8.I used to take (take) work home,but I don't do it any more.
9.He caught up with the parade and walked behind.
10.The election was held six months ahead of schedule.
Ⅱ.完成句子
1.He went out for a walk,while I stayed at home.
他出去散步了,而我却待在家里。
2.Send me a letter as soon as you arrive so that I won't worry.
到了就来信,省得我挂念。
3.Finally we arrived at what used to be a battlefield.
最终我们到了过去曾经是战场的地方。
4.The idea presented by Peter is much simpler.
彼得提出的想法要简单得多。
5.I like your methods of teaching and I shall adopt them in my class.
我喜欢你的教学方法,我将在我的课堂上采用。
Ⅲ.阅读理解
SYDNEY: Australian scientists have found how to switch hunger on and off using a molecule (分子) that targets the brain—a discovery which could stop weight loss in sick patients or produce weight loss in the obese.
The molecule, known as MIC-1, is produced by common cancers and targets receptors (受体) in the brain that switch off appetite. But Australian researchers found that by using antibodies against MIC-1 they were able to switch appetite back on. When normal and obese mice were treated with MIC-1, they ate less and lost a lot of weight, suggesting that MIC-1 may also be used to treat severe obesity, the Sydney researchers said in a statement yesterday.
“This work has given us a better understanding of the part of the brain that regulates appetite,” said Herbert Herzog, director of neuroscience research at the Garvan Institute in Sydney. “Our bodies send complex chemical signals to our brains, which interpret