潜在就业量是一个外生变量,它不取决于产量、消费、投资和价格水平等宏观经济变量但另一方面,潜在就业量又不是固定不变的,它随着人口的增长而稳定增长。()
参考答案:对
用所给词的正确形式填空。
1. How many (play) are there in a football team?
2. Be (care). The road is very busy.
3. They are learning the (nine) lesson.
4. I have the (little) money of all.
5. There are ten (monkey) in the zoo.
6. My brother often (carry) water for Granny Wang.
7. ______ he ______ (come) from Japan?
8. Thank you for (tell) me about it.
9. Wei Dong enjoys (play) football.
10. My father (not have) lunch in the factory.
两种微粒含有相同的质子数和电子数,这两种微粒可能是 [ ]
①两种不同的原子;②两种不同元素的原子;③一种原子和一种分子;④一种原子和一种离子;⑤两种不同分子;⑥一种分子和一种离子;⑦两种不同阳离子;⑧两种不同阴离子;
⑨一种阴离子和一种阳离子
A.①③⑤⑥⑦⑧
B.①③⑤⑦⑧
C.①③④⑤⑦
D.全部都是