1.选择题- (共4题)
1.在建筑装修中，工人用质量为M的磨石对斜壁(斜壁与竖直方向的夹角为θ)进行打磨，如图所示．当对磨石加竖直向上的推力F时，磨石恰好沿斜壁匀速向上运动．已知磨石与斜壁之间的动摩擦因数为μ，则磨石受到的摩擦力是 ( )
2.已知水稻高秆（T）对矮秆（t）为显性，抗病（R）对感病（r）为显性，这两对基因在非同源染色体上。现将一株表现型为高秆、抗病的植株的花粉授给另一株表现型相同的植株，所得后代表现型是高秆∶矮秆=3∶1，抗病∶感病=3∶1。根据以上实验结果，判断下列叙述错误的是
3.已知水稻高秆（T）对矮秆（t）为显性，抗病（R）对感病（r）为显性，这两对基因在非同源染色体上。现将一株表现型为高秆、抗病的植株的花粉授给另一株表现型相同的植株，所得后代表现型是高秆∶矮秆=3∶1，抗病∶感病=3∶1。根据以上实验结果，判断下列叙述错误的是
4.已知水稻高秆（T）对矮秆（t）为显性，抗病（R）对感病（r）为显性，这两对基因在非同源染色体上。现将一株表现型为高秆、抗病的植株的花粉授给另一株表现型相同的植株，所得后代表现型是高秆∶矮秆=3∶1，抗病∶感病=3∶1。根据以上实验结果，判断下列叙述错误的是
2.单项选择- (共8题)
5.
Not having a good ________ of English can be a serious barrier to achieving your goals.
| A．demand | B．appreciation | C．command | D．experience |
6.
My daughter thought she was________ when I asked him for the advice on the new plan.
| A．something | B．anything | C．somebody | D．anybody |
7.
From the day we enter _____ University, we know _____ fierce competition for jobs is awaiting us upon graduation.
A. an, a B. /, a C a, / D. the, /
A. an, a B. /, a C a, / D. the, /
8.
When the man came in, gun in hand, we all stood there, ________.
| A．frightened | B．frightening |
| C．being frightened | D．having frightened |
9.
_____ she is the only daughter of the boss, she started from the lowest position as a common employee.
| A．Unless | B． While | C． Since | D．As |
10.
Was it through Li Ning, ________working at a high school, ________you got to know Wangke?
| A．who I think it was; who | B．that I think were; which |
| C．who I think was; that | D．I think who was; which |
11.
–What did the young man come to your company for?
-- He wanted a job, _____ he had never experienced before.
-- He wanted a job, _____ he had never experienced before.
| A．what | B．the one | C．that | D．one |
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