Mr. Green:Hello! This is English-help Ce

题型:完形填空

问题:

Mr. Green:Hello! This is English-help Centre.   1 
Li Lei:Yes. I have some problems with English.
Mr. Green:  2 
Li Lei:First, I can’t speak English well.
Mr. Green:  3  Why not join a language club to practice English?
Li Lei:OK, I’ll try it. Also I can’t understand the teacher when she talks to the class.
Mr. Green:Listening to more tapes will help a lot. Remembering the words of English songs also helps a lot.
Li Lei: 4  I’ll do that as much as possible.
Mr. Green:You’re welcome.   5 
A. Don’t worry.
B. I hope your English will improve soon.
C. Can I help you?
D. Thank you very much.
E. What are your problems?
1.____________  2.____________  3.____________  4.____________  5.____________ 
考点:语音
题型:完形填空

苯酚与水中游离氯可结合产生氯酚臭,氯酚臭阈为()

A.0.1mg/L

B.0.01mg/L

C.0.001mg/L

D.0.005mg/L

E.0.0025mg/L

题型:完形填空

已知4x-5y=0,则(x+y):(x-y)的值为(  )

A.1:9

B.-9

C.9

D.-1:9

题型:完形填空

示波管是示波器的核心部件,它由电子枪、偏转电极和荧光屏组成,如图所示。如果在荧光屏上P点出现亮斑,那么示波管中的

[ ]

A.极板x应带正电

B.极板x′应带正电

C.极板y应带正电

D.极板y′应带正电

题型:完形填空

安装仪表安全栅时,要()

A.用M4螺丝紧固在汇流条上

B.用M4螺丝紧固在盘支架上

C.用M4螺丝紧固在特制的绝缘板上

题型:完形填空

关于逆行性牙髓炎,下列说法错误的是()

A.其感染源于深牙周袋

B.细菌可通过根尖孔或侧副根管进入牙髓

C.牙髓感染的走向为从根部牙髓向冠部牙髓

D.由根分叉部感染引起的牙髓炎多为局限性牙髓炎

E.由根尖方向逆行感染引起的牙髓炎,疼痛并不剧烈

更多题库