1.选择题- (共7题)
1.X、Y、Z、M、Q、R是6种短周期元素，其原子半径及主要化合价如下：
元素代号 | X | Y | Z | M | Q | R |
原子半径/nm | 0.160 | 0.143 | 0.102 | 0.089 | 0.074 | 0.037 |
主要化合价 | +2 | +3 | +6，﹣2 | +2 | ﹣2 | +1 |
6.将一定量的铜粉加入到100mL某浓度的稀硝酸中，充分反应后，容器中剩有m1g铜粉，此时共收集到NO气体a mL（标准状况）．然后向上述混合物中加入足量稀硫酸至不再反应为止，容器中仍剩有铜粉m2g，则（m1﹣m2）为（ ）
2.单项选择- (共8题)
8.
Recycling is one way to protect the environment; reusing is ________.
| A．another | B．the other |
| C．one another | D．one |
9.
Old-fashioned phones matter when wireless networks _____ in disasters.
| A．turn down | B．break down | C．turn out | D．break out |
10.
The airport ______ next year will help promote tourism in this area.
| A．having been completed | B．completed |
| C．being completed | D．to be completed |
11.
_______ small, the company has about 1000 buyers in over 30 countries.
| A．Although | B．If | C．Once | D．As |
13.
I would have gone to my cousin’s birthday party last night, but I ______ available.
| A．was | B．had not been | C．was not | D．would not be |
14.
It wasn’t until near the end of the letter ______ she mentioned her own plan.
| A．where | B．that | C．why | D．when |
试卷分析
-
【1】题量占比
选择题:(7道)
单项选择:(8道)
-
【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：0
5星难题：0
6星难题：7
7星难题：0
8星难题：1
9星难题：0