以下属于人畜共患病病原体的是 （） A.沙眼衣原体 B.鹦鹉热衣原体 C.肺炎衣原

用所给单词的适当形式填空。

1. My father goes to Beijing ______ (two) a year.

2. Look! Lucy and Lily ______ (run) on the playground.

3. It is good for us to eat more green ______ (vegetable).

4. In the USA, most children like ______ (eat) junk food.

5. Can you find any ______ (different) between this photo and that one?

6. I think everyone has two ______ (foot).

7. There is an ______ (interest) program on TV every night.

8. My mother usually goes ______ (shop) on weekends.

9. —Do you have a ______ (health) lifestyle?

    —Yes, so I'm quite well.

10. Here are the ______ (result) of the student activity survey.

下列各组词中，没有错别字的一组是(        )

A．彳亍隔阂嬉笑绿草如阴

B．漂泊苍茫凄婉不加思索

C．忸怩屠戮菲薄生杀予夺

D．恩慧窒息尸骸阳光明媚

地锚的安全系数为（）倍。

A、1～1.5；

B、2～2.5；

C、3；

D、3.5～4。

寄生虫在宿主体内的免疫逃避机制主要为（）

A.抗原变异

B.抗原伪装

C.释放可溶性抗原

D.改变宿主的免疫应答

E.解剖位置的隔离

亲子之间出现的所有矛盾可概括为三大矛盾，即（）。

A.行为矛盾

B.需求矛盾

C.情感矛盾

D.价值观矛盾