题目内容
（请给出正确答案）
The sun warms the earth, ______ makes it possible for plants to grow.
A．this
B．that
C．as
D．which
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更多“The sun warms the earth, _____…”相关的问题
A. the star moved away from the sun
B. another star happened to come near the sun
C. fhe sun and the moon raised the tides on the earth
D. a large tidal wave of a star travelled over the surface of the sun
Which of the following statements in supported by the passage？
A．The sun shines constantly and gives out the same amount of energy every year．
B．The cause of the sun’S fluctuations is its loss of energy with each passing year
C．It is sure that the energy sent out by the sun will drop when more sun spots appear．
D．Fluctuations in weather pattems are the results of the pull of gravity．
若基元反应A=2Z的活化能为Ea，而其逆反应的活化能为Ea’。
(1)加入催化剂后，
各有何变化？
(2)加入不同的催化剂，对Ea的影响是否相同？
(3)改变A的起始浓度，Ea有何变化？
"Evil Under the Sun", ______ is a famous detective story, is written by a Christie.
A．which
B．that
C．it
D．what
A．When
B．If
C．Now that
D．Just as
The sun heats the earth, ______makes it possible for plants to grow.
A．that
B．where
C．which
D．what
