1.选择题- (共3题)
1.
如图甲所示飞机的升力主要来自它的机翼，机翼的横截面积如图乙所示，这种特殊的形状是利用了{#blank#}1{#/blank#} 的原理使飞机获得向上的升力．利用机翼产生升力的直升飞机悬停在空中时，升力和{#blank#}2{#/blank#} 是一对平衡力，升力的施力物体是{#blank#}3{#/blank#} ；我国汉代发明的孔明灯（如图丙所示）是利用加热灯笼内的空气，使{#blank#}4{#/blank#} （选填“重力减小”或“浮力增大”），当浮力大于重力时，孔明灯就腾空而起．
2.
飞机机翼横截面的形状上下不对称，当它飞行时，机翼上部气体流动的速度{#blank#}1{#/blank#} 下部流动的速度，根据“气体压强与流速的关系”原理，机翼上部气体的压强{#blank#}2{#/blank#} 下部的压强，这样，机翼上下存在一个压力差，正是这个压力差把飞机举上天的．（填“大于”、“小于”或“等于”）
2.单项选择- (共11题)
4.
The information tells me that the way of education in Canada is quite different from _____ in China .
| A．one | B．it | C．that | D．those |
5.
We have made _______great progress in the medical field, but ______ progress we have made is not enough.
| A．a; a | B．a; the | C．/; the | D．/; / |
6.
“This month our family has used ______ water as we did last month.” said Mother .
| A．as twice as much | B．more than twice |
| C．twice as much as | D．more than twice as much |
7.
Auckland is a most exciting city with people of many different cultures ______ there .
| A．live | B．having lived | C．lived | D．living |
8.
Mary , _______ for her healthy lifestyle , was pictured on the front cover of Life Style magazine .
| A．knowing | B．to know | C．known | D．being known |
9.
My cousin works as a guide . She used to make ______ money than she does now .
| A．much less | B．quite less | C．much fewer | D．a lot fewer |
10.
I was surprised ______little birds could eat ______ many insects in ______ a short time.
| A．that so; so; such | B．that so; such; such |
| C．that such; so; so | D．that such; so; such |
11.
We Chinese are proud ______ the great success _______ the area of science and technology .
| A．of ; in | B．by ; on | C．with ; on | D．for ; in |
12.
He spoke through a microphone , ______ he was clearly heard in the great hall.
| A．even if | B．because | C．in order that | D．so that |
13.
The old town has narrow streets and small houses _______ are built close to each other .
| A．in which | B．where | C．what | D．that |
试卷分析
-
【1】题量占比
选择题:(3道)
单项选择:(11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：2
5星难题：0
6星难题：7
7星难题：0
8星难题：2
9星难题：0