1.选择题- (共4题)
1.1990年5月，紫金山天文台将他们发现的第2752号小行星命名为昊键雄星，该小行星的半径为16km。若将此小行星和地球均看成质量分布均匀的球体，小行星密度与地球相同。已知地球半径R=6400km，地球表面重力加速度为g。这个小行星表面的重力加速度为
2.单项选择- (共5题)
5.
The time has come ______ we can make extensive use of nuclear energy．
| A．when | B．which | C．since | D．while |
6.
_____ about Lucy, the teacher called her parents to find out why she was so often absent from class．
| A．Concerning | B．Considering | C．Concerned | D．Considered |
7.
Many students find _____ jobs during their summer holidays．
| A．permanent | B．comfortable | C．temporary | D．contemporary |
8.
______ young people see and hear in the media helps them to figure out how the world works．
| A．Which | B．What | C．That | D．How |
试卷分析
-
【1】题量占比
选择题:(4道)
单项选择:(5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：5
7星难题：0
8星难题：0
9星难题：0