【判断题】【消耗次数：1】
森林生态系统调节气候的作用体现了生物多样性的直接价值。
①
正确
②
错误
参考答案：
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【判断题】
生态系统是生物与环境构成的统一的整体，生态系统的多样性包括生物种类的多样性和生活环境的多样性，因此，生态系统的多样性受到影响时，会影响生物种类的多样性和基因的多样性基因的多样性
①
正确
②
错误
【判断题】
《生物多样性公约》对“生物多样性”的定义为：指所有来源的形形色色生物体，这些来源除其他外包括陆地、海洋和其他水生生态系统及其所构成的生态综合体；这包括物种内部、物种之间和生态系统的多样性。
①
正确
②
错误
【单选题】
森林生态系统对太阳能的利用率远大于农田生态系统，主要原因是森林生态系统（）。
①
A.以木本植物为主
②
B.土壤肥沃
③
C.没有人类的活动
④
D.植物群落有分层结构
随机题目
【单选题】
This article deals with the natural phenomenon which __________ most interesting to everyone.
①
are
②
is
③
they are
④
it is
【单选题】
This is a very difficult operation. It is essential that you __________ for emergency.
①
are to be prepared
②
would prepared
③
be prepared
④
must be prepared
【单选题】
I __________ going to the doctor, but I wish I hadn’t.
①
pick out
②
make out
③
give off
④
put off
【单选题】
Not __________, with youth unemployment so high, some school – leavers with qualifications fail to find jobs.
①
obviously
②
surprisingly
③
particularly
④
normally
【单选题】
I’ll send you a short message as soon as I _______ in Hong Kong.
①
arrived
②
will arrive
③
am going to arrive
④
arrive
【单选题】
Good morning, Dr Johnson’s office. Can I help you?
①
Speaking, please
②
I’d like to make an appointment, please
③
Yes, go on
④
No, you can’t
【单选题】
The population of many Alaskan cities has __________ doubled in the past three years.
①
larger than
②
as great as
③
more than
④
as many as
【单选题】
The match was cancelled because most of the members __________ a match without a standard court.
①
objected to having
②
objected to have
③
were objected to have
④
were objected to having