公民购买债券、银行储蓄、参加商业保险的共同点是______。A．都以获利为主要目的

看图补全句子。

1.      They are pretty________.  I like them.

2.          It's ________ in Moscow.

3.      The______ is heavy. I can't carry it.

4.I like _________.  What about you?

5.      I have a cool_________. It's my birthday gift.

将下列旅游胜地与国家用直线连接

A．巴特农圣庙

B．塔桥            

C．风车           

D．艾菲尔铁塔      

E．斗牛            a．英国

b．荷兰

c．法国

d．西班牙

e．希腊

—I just found an MP4 on my desk. Whose MP4 is this?

—Oh, that ______ be John's. He's been looking for his MP4 for an hour. [ ]

A. must

B. might

C. can't

对继电保护装置进行定期检验时，如何测全回路的绝缘电阻？其数值是多少？

松针叶的气孔常下陷。