【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：
复制
纠错
相关题目
【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】
Never before ___ in greater need of modern public transport than it is today.
①
?has this city been
②
?this city has been
③
?was this city
④
this city was
【单选题】
Little ___ that we were watching his every move, so he seemed to be going his own way in this business.
①
he realized
②
?he didn’t realize
③
?didn’t he realize
④
?did he realize
【单选题】
It is what you do rather than what you say ___ matters.
①
that
②
what
③
which
④
this
【单选题】
After dinner the minister made a short ___ to the guests.
①
delivery
②
pronunciation
③
conversation
④
speech
【单选题】
It was for this reason ___ her uncle moved out of New York and settled down in a small village.
①
which
②
why
③
that
④
how
【单选题】
The car salesman took the customer for a driver in the new model in order to ___ its improved features.
①
advocate
②
demonstrate
③
exhibit
④
reveal
【单选题】
I caught a___ of the car before it disappeared around the bend.
①
glance
②
glimpse
③
glare
④
stare
【单选题】
Alice ___her father that both she and her husband would be happy if he would live with them.
①
convinced
②
reinforced
③
pledged
④
required
【单选题】
Never in my wildest dreams ___ these people are living in such poor conditions.
①
I could imagine
②
?could I imagine
③
?I couldn’t imagine
④
?couldn’t I imagine
【单选题】
It was ___ back home after the experiments.
①
not until midnight did he go
②
until midnight that he didn’t go
③
not until midnight that he went
④
until midnight when he didn’t go