1 . —Is it difficult for you to understand this passage?
—Yes, ________ there aren’t any new words in it.

A．because

B．but

C．so

D．though

2 . What will happen if you do not eat a ____________ (平衡的) diet.

3 . ______(bury) in study, he didn’t know when it began to rain.

4 . Cycling is highly ____________(有益的)to health and the environment.

5 . I have got a good __________(平衡) and learn to ski quite quickly.

6 . Next to physics, I like __________(生物) best.

7 . Before making the final decision, you should ________ (权衡) the advantages against the disadvantages.

8 . There is a general __________ (believe) that things will soon get better. （所给单词适当形式填空）

9 . 她们总算见到了野山羊，甚至还看到了一只熊和一只鹰。(manage to do)

10 . I feel it is your husband who is to _________(责备) for the spoiled child.