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【单选题】
下列关于细胞结构和功能的叙述,正确的是( )A.
原核生物的细胞结构中没有线粒体,只能通过无氧呼吸获得能量
B.
细胞分化、衰老和癌变都会导致细胞形态、结构和功能发生变化
C.
核糖体是细胞内蛋白质的“装配机器”,主要由蛋白质和tRNA组成
D.
蓝藻有丝分裂前后,染色体数目一般不发生改变
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【单选题】Why didn't the woman go swimming?
A.
She didn't have enough time.
B.
The water was too cold.
C.
The water was too deep.
D.
She was unable to swim.
【简答题】Why didn't the Japanese woman look at the man in the meeting? [A] Because she disliked the man. [B] Because they were competitors. [C] Because she was a shy woman. [D] Because she was polite to the ma...
【简答题】____也称延长杆或加长杆,是套筒类成套工具不可缺少的一部分。主要作用是加装在____和____之间,用于拆卸和更换装得很深,仅凭套筒和手柄无法接触的螺栓、螺母。
【单选题】Why didn’t the woman catch the plane?
A.
The traffic was busy.
B.
She didn’t know the way.
C.
She got up late.
【单选题】Why didn't the woman register three weeks ago?
A.
Because she didn't have enough money to pay the tuition.
B.
Because some woman told her it was not right to register.
C.
Because some woman told her that she should have birth certificate.
D.
Because she didn't have time.
【单选题】Why didn't the woman take a plane?
A.
It isn't a long way.
B.
She wanted to go by train.
C.
She didn't get a ticket.
【单选题】Why didn't the woman go to dinner?
A.
Because she couldn't find the restaurant.
B.
Because she was not invited to dinner.
C.
Because she had a meeting.
D.
Because she didn't feel well.
【判断题】接杆也称延长杆或加长杆,是套筒类成套工具不可缺少的一部分。日常维修工作中,接杆的主要作用是加装在套筒和配套手柄之间,用于拆卸和更换装得更深,仅凭套筒和手柄无法接触的螺栓、螺母。
A.
正确
B.
错误
【单选题】Why didn't the woman buy the saucepans earlier?
A.
Because she didn't have money with her.
B.
Because her neighbor wanted to have them.
C.
Because she hadn't decided to buy then.
D.
Because the shop already closed up.
【简答题】A．The woman wondered why the man didn't return the book. B．The woman doesn't seem to know what the book is about. C．The woman doesn't find the book useful any more. D．The woman forgot lending the book...
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