中国人传统的生活方式是子孙满堂，这点很令美国老年人羡慕。儒家文化提倡“父母在，不远游

用所给单词的适当形式填空。

1. Look, the children are doing morning ___________ (exercise).

2. My brother and I like ___________ (drink) coffee.

3. The bird can ___________ (sing) the "ABC" song.

    It's very clever.

4. His mother often___________ (help) him to do his homework.

5. There are many___________ (different) between

    you and your twin brother.

6. I go to the movies ___________ (first) a month.

7. He's too young. He can __________ ( hard) ride a bike.

8. Our English teacher likes to wear ___________ (color) clothes,

   because she wants to be young.

9. A good __________ (eat) habit is good for your health.

10. In winter, my father often goes ___________ (skate).

简述变应性肉芽肿的临床特点。

新自由主义

液氯生成主要有三种方法（）；（）、低温低压法，而本公司应用的液化方法为低温低压法。

晶闸管导通后，阳极与阴极间的正向电压很小，约为（）V左右。

A.1

B.2

C.3

D.4