1.选择题- (共1题)
1.将四块相同的坚固石块垒成圆弧形的石拱,其中第3、4块固定在地基上,第l、2块间的接触面是竖直的,每块石块的两个侧面间所夹的圆心角均为30°。假定石块间的摩擦力可以忽略不计,则第1、2块石块间的作用力F1和第1、3块石块间的作用力F2的大小之比为 ( )

2.单项选择- (共6题)
2.
______the importance of education, the villagers paid more attention to the schooling of the children.
A.Realized | B.To realize | C.Realize | D.Having realized |
3.
The picture I took in the countryside ______ me of the time when I stayed there.
A.remembers | B.reminds | C.calls | D.tells |
4.
--Tom is very stupid. He fails in every exam.
--_____, he is more lazy than stupid.
--_____, he is more lazy than stupid.
A.On the other hand | B.On one condition |
C.In my opinion | D.In other words |
5.
There is no doubt _____ he means to help, but in fact he just gets in the way.
A.that | B.whether | C.what | D.if |
6.
_____wild animals when you go up the hill.
A.Look out for | B.Take care | C.Take care of | D.Be careful |
试卷分析
-
【1】题量占比
选择题:(1道)
单项选择:(6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:0
7星难题:0
8星难题:0
9星难题:6