具有传染性的疾病是（）。 A.发颐 B.瘁腮 C.热疮 D.疗疮 E.多发性疖_爱下问搜题

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问题单项选择题

具有传染性的疾病是（）。

A.发颐

B.瘁腮

C.热疮

D.疗疮

E.多发性疖

答案

参考答案：B

完形填空

完形填空。

     Traffic is very important. It means everything and everybody is using the roads.
Today more and    1 people live in the cities.  So there is    2    traffic and usually not
enough 3 , and    4   of the roads are too narrow (狭窄的).  That is  5   there are
a great many accidents.  In cities   6 over the world thousands   7    people die or
   8   hurt in accidents.  Of course, traffic accidents can't often  9  in the countries,
because there is not   10   much traffic, so there are not so many accidents.  Each of us
should care for our lives (生命).

( )1. A. most
( )2. A. a lot of
( )3. A. ways
( )4. A. some
( )5. A. because
( )6. A. of
( )7. A. from
( )8. A. receive
( )9. A. happen
( )10. A. too

B. many
B. many
B. means
B. much
B. so
B. all
B. and
B. go
B. have
B. so

C. some
C. a number of
C. roads
C. more
C. why
C. and
C. with
C. are
C. produce
C. enough

D. more
D. lots
D. cars
D. few
D. that
D. from
D. of
D. take
D. form
D. such

单项选择题

假定有下列循环结构Do Umil条件循环体Loop 则正确的叙述是( )。

A．如果“条件”值为0，则一次循环体也不执行

B．如果“条件”值为0，则至少执行一次循环体

C．如果“条件”值不为0，则至少执行一次循环体

D．不论“条件”是否为“真”，至少要执行一次循环体