题目内容
（请给出正确答案）
？
A. poor farming
B. overpopulation
C. radical climate change
D. disappearance of rare plant species
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更多“What is the root causeof deser…”相关的问题
第1题
The word “deteriorated ” in paragraph2 means
A.deepened
B.suffered
C.slipped
D.worsened
第2题
？
A.The deserts are replaced withgrasslands
B.The deserts are expanding
C.the deserts are moving northwards
D.the deserts are being deserted
第3题
A. is covered with sad and grass
B. has a long history
C. occupies much of South Nigeria
D. belongs to Sudan
第4题
A. making good use of international aids
B. developing a sustainableagricultural economy
C. gaining international support
D. converting agricultural land intoforest
第5题
According to the context，the word "disruption" in Paragraph 6 means
A."Confusion."
B."Tearing apart."
C."Interruption."
D."Flattening."
第6题
？
A.The star's matter will move further away from by the black hole.
B.The black hole's matter will heat up.
C.The torn star's matter will swirl into the black hole.
D.The black hole's matter will release ultraviolet light and X-rays.
第7题
? ？
A.No nuclear explosion would be triggered inside the star.
B.The star would be destroyed completely.
C.Much of the star's matter thrown by the explosion would be beyond the black hole's reach.
D.The black hole would completely devour the star.
第8题
A.whether nuclear reaction would occur.
B.whether the stars would increase its density and temperature.
C.whether shock waves would occur.
D.whether the uneven forces would flatten the stars.
第9题
. Which of the following destructive statements is NOT mentioned in the passage？
A.The black hole could tear apart the star.
B.The black hole could trigger a nuclear explosion in the star.
C.The black hole could dwindle its size considerably.
D.The black hole could devour the star.
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