胆囊癌小结节型与胆固醇息肉的鉴别，支持前者的主要依据是（）。

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问题单项选择题

A.病灶基底宽阔，直径＞1.5cm

B.病灶基底较窄

C.胆囊壁不光滑

D.发生于胆囊颈部

E.病灶单发

答案

参考答案：A

填空题

用所给单词的适当形式填空。

1. Eric often _____ (go) swimming with his friends.

2. His mother usually _____ (take) a bus to the supermarket.

3. My mother _____ (watch) TV every day.

4. I like comedies but my brother _____ (not like) them.

5. What _____ your uncle usually_____ (do) on Sundays?

6. I have two basketballs and my sister_____ (have) two basketballs, too.

7. Thanks for _____ (join) our P. E. club.

8. What cloes Ben's father want _____ (do)?

9. My mother usually _____ (go) to work at seven-thirty.

10. Let Mr Green _____ (tell) you an interesting story (故事).

单项选择题

汽车起重机空车行驶时，应把吊钩挂在车前的横档上，以免吊杆及吊钩摆动，吊杆所放的位置应是（）。

A.20°～50°

B.行车的正前方

C.10°～30°

D.行车的45°方向