题目内容
（请给出正确答案）
Why was it possible for these ancient trees let more light through than modern ones？
A．Because they were closely spaced, only 3 to 16 feet apart.
B．Because they were smaller plants and shrubs.
C．Because their branches did not fan out as far as to form. a shape like umbrella.
D．Because they had very small leaves like that of fern and dropped easily.
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更多“Why was it possible for these …”相关的问题
Why does the author mention "Indian mustard"？
A．To warn about possible risks involved in phytoremediation
B．To help illustrate the potential of phytoremediation
C．To show that hyperaccumulating plants grow in many regions of the world
D．To explain how zinc contamination can be reduced
Which of the following is the major point of the passage？
A) Why it is necessary to identify people’s personality
B) Why it is possible to describe people
C) How to get to know people
D) How best to recognize people
One possible mason why women have better memories than men is that______ .
A．they have a wider range of interests
B．they are more reliant on the environment
C．they have an unusual power of focusing their attention
D．they are more interested in what's happening around them
Why do researchers estimate elephant numbers in an area by counting dung piles？
A．Because elephants are difficult to catch.
B．Because it is not possible to count elephants from a plane.
C．Because it is not possible to keep track of elephants.
D．Because elephants are shy animals.
What are the possible ways of paragraph development？
A.Subject +how
B.Subject +what
C.Subject+ why
D.Subject + example
One possible reason why women have better memories than men is that ________.
A) they have a wider range of interests
B) they are more reliant on the environment
C) they have an unusual power of focusing their attention
D) they are more interested in what’s happening around them
The first paragraph discusses the following points EXCEPT______.
A．the possible penalty of taking on debt
B．the reason why the young may take on debt
C．the different ways to avoid taking on debt
D．a research about high school finance courses
Why does the author assert that through travel We only "truly touch one another"？
A．Because he believes tourism makes it possible for people to help one another.
B．Because he thinks that sincere learning of a culture is only possible by travel.
C．Because he believes travel is the only way which can mix up different cultures.
D．Because he wants to emphasize tourism's powerful effect on combating social problems.
Why does the author assert that through travel we only "truly touch one another"？
A．He wants to emphasize tourism's powerful effect on combating social problems.
B．He believes tourism makes it possible for people to help one another.
C．He believes travel is the only way cultures can learn about each other.
D．He thinks that sincere learning of a culture is only possible by travel.
