1.选择题- (共4题)
1.
一批产品抽50件测试,其净重介于13克与19克之间,将测试结果按如下方式分成六组:第一组,净重大于等于13克且小于14克;第二组,净重大于等于14克且小于15克; ... 第六组,净重大于等于18克且小于19克.如图是按上述分组方法得到的频率分布直方图.设净重小于17克的产品数占抽取数的百分比为x,净重大于等于15克且小于17克的产品数为y,则从频率分布直方图中可分析出x和y分别为( )
3.一个弹簧振子,在光滑水平面上作简谐运动,如图所示,当它从左向右恰好经过平衡位置时,与一个向左运动的钢球发生正碰,已知碰后钢球沿原路返回,并且振子和钢球不再发生第二次碰撞。则下面的情况中不可能出现的是 ( )

4.一个弹簧振子,在光滑水平面上作简谐运动,如图所示,当它从左向右恰好经过平衡位置时,与一个向左运动的钢球发生正碰,已知碰后钢球沿原路返回,并且振子和钢球不再发生第二次碰撞。则下面的情况中不可能出现的是 ( )

2.单项选择- (共8题)
5.
—I don’t think we’ll be able to pass the driving test.
—If we keep practicing , we, should make ___.
—If we keep practicing , we, should make ___.
A.this | B.that | C.one | D.it |
6.
In 1519 ____ traveler who went to American from Europe discovered ____tomato.
A.the; the | B.the ; a | C.a:.a | D.a; the |
7.
Everyone’s talking about _____ a.movie, but nobody can tell exactly what its title is.
A.there being | B.there be |
C.there will be | D.there is |
8.
There was a bloody incident and more than 20 journalists were reported ____ in southern Philippines.
A.having been killed | B.to have been killed |
C.being killed | D.killed |
9.
After working abroad for several years.Gill wants to settle down to a ____job in Britain.
A.normal | B.constant | C.permanent | D.primary |
10.
One of the first things Joan did ____ getting home was to water her flowers.
A.by | B.on | C.at | D.for |
11.
I was so tired that __ I closed my eyes, 1 fell asleep.
A.the moment | B.the moment, when |
C.for the moment | D.at the moment when |
试卷分析
-
【1】题量占比
选择题:(4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:8
7星难题:0
8星难题:0
9星难题:0