【判断题】【消耗次数：1】
生物多样性包含遗传多样性、物种多样性、生态系统多样性三个层次
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正确
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错误
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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
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正确
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错误
随机题目
【单选题】
When I awoke on the morning of Sunday, the news was brought ______ me ______Hitler’s invasion of Russia.
①
for…of
②
to…on
③
to… of
④
for… on
【单选题】
Hitler was wrong and we should ______ to help Russia.
①
go out all@go all out
②
make out all
③
make all out
【单选题】
This is no time to moralize ______ the follies of countries which have allowed themselves to be struck down one by one.
①
to
②
on
③
by
④
in
【单选题】
Hitler was however wrong and we should ______ to help Russia.
①
make all out
②
make out all
③
go all out
④
go out all
【单选题】
In June 1941 Hitler suddenly ______ an attack on Russia.
①
launched
②
exerted
③
developed
④
created
【单选题】
He said that everyone should turn their backs _____ a craving for fame and prestige.
①
for
②
down
③
up
④
on
【单选题】
The subjugation of the western Hemisphere______ his will…
①
to
②
in
③
according to
④
against
【单选题】
We shall ______ all our friends and allies in every part of the world to take the same course and pursue it.
①
appeal to
②
appeal for
③
appeal with
④
appeal of
【单选题】
He gambled ______ being able to buy a ticket at the last minute.
①
about
②
on
③
in
④
with
【单选题】
The big shot ______ several government officials in the past years.
①
buy out
②
buy up
③
buy off
④
buy down