下列生态因子不是自然资源因子的是( )。A.光合有效辐射B.水体中的浮游生物C.土

题型:单项选择题

问题:

下列生态因子不是自然资源因子的是( )。

A.光合有效辐射
B.水体中的浮游生物
C.土壤肥力
D.风

考点:专升本考试生态学基础专升本生态学基础
题型:单项选择题

阅读理解。

      It seems that many young people still think that smoking is “cool”. There are many reasons for this, for example, films.Many actors smoke in films and this can lead the young to think that smoking can be cool,

but now, top actors and actresses are refusing roles that would require them to smoke, so hopefully the

"cool" factor will become much smaller.

      I know that in England, many young peaple believe that smoking makes them look cool and attractive!

It’s probably true that smoking helps them look older. Doctotrs say that along with sugar and alcohol,

smoking ages the skin faster than anything else.Do you really want to see wrinkles on your face at a young

age? Do you really think that smoking will make you more attractive to that boy or girl in your class? 

     Do you really believe that he or she wilI like someone that smells like a factory? This is simply a bad

idea.

     Besides causing cancer, smoking will make you ugly and sad, so, boys and girls, forget about smoking!

Don’t ever start. If you are smoking, give it up as quickly as possible. Why not lead a healthy life without

smoking?

1.Some young people think smoking is “cool” because ____________.

A. many actors and actresses smoke in films

B. their patents often smoke before them

C. smoking can help them to grow up sooner

D. smoking can make them look younger

2.Besides smoking, ___________ can make people look older.

A. sugar and cigarettes    

B. alcohol and ice cream

C. ice cream            

D. sugar and wine

3.Which of the following is NOT a result of smoking?

A. Smoking can cause cancer.      

B. Smoking can make people ugly.

C. Smoking can make people sad.    

D. Smoking can make people mad.

4.This passage is written for ____________.

A.actors who like smoking            

B.young people who like smoking

C.old people who think smoking is cool  

D.patents who think smoking is cool

5.What’s the writer’s opinion on smoking?

A. Smoking can make young people popular in class.

B.Young people shouldn’t smoke.

C. Grown-ups should smoke to look cool.

D. Actors shouldn’t smoke in films.

题型:单项选择题

水的CT值是 ()

A.1000HU

B.100HU

C.10HU

D.0HU

E.-1000HU

题型:单项选择题

6月15日A公司收到B公司签发的面值为4800元、60天到期、票面利率为12%的票据一张,并于6月30日到银行贴现,贴现率为10%,则贴现所得为( )元。

A.4834.8

B.4834

C.4830

D.4850

题型:单项选择题

下垂性水肿,常见于()

A.心源性水肿

B.肾源性水肿

C.肝源性水肿

D.营养不良性水肿

E.内分泌源性水肿

题型:单项选择题

带式输送机的上覆盖工作层的厚度一般为()、3.0mm、4.5mm和6.0mm四种。

A.0.5mm

B.1.0mm

C.1.5mm

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