5个数的平均数是38,后四个数的平均数是35,第一个数是______.

题型:填空题

问题:

5个数的平均数是38,后四个数的平均数是35,第一个数是______.

考点:统计(平均数)
题型:填空题

根据句意,选择适当的词语填空。

1. Someone will probably find it and _______ (return, return to) it sooner or later.

2. She was ________ (worried about, worried) and asked him if he had seen a history book.

3. It looks ________ (exciting, excited), but I don't know how to surf.

4. Hawaii is famous ________ (for, of) its beautiful beaches.

5. His teacher, Miss Lee, spoke ________ (highly, high) of her student.

6. There was a truck _______ (collecting, collects) rubbish and throw it in.

7. You have helped _______ (protect, product) our environment.

8. There is _______ (much too, too much) water here. How can I get past?

9. Don't forget ________ (to tell, telling) me the time. I'd like to join you.

10.Make sure that all of the rubbish _______ (go, goes) into the dustbin.

题型:填空题

茶碱的分布模型一般是()

A.单室模型

B.二室模型

C.多室模型

D.血液中

E.肾、心、肝等脏器中

题型:填空题

Linda felt very_________ after the long way, so she stopped to have a rest.[ ]

A. surprised  

B. shy    

C. tired    

D. excited

题型:填空题

胀管器是用来()的井下工具。

A、解出砂卡

B、修复套管

C、油管解堵

D、打捞落物

题型:填空题

角磨机使用,电源线不得私自改接,电源线不得长于()米。

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