题目内容
（请给出正确答案）
[主观题]
According to many scientists, solar energy will be used ______ （extend) in the 21 st centu
According to many scientists, solar energy will be used ______ (extend) in the 21 st century.
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Which of the following is INCORRECT according to the passage？
[A] The number of school injuries has doubled in ten years．
[B] About 20% of American children and teenagers are overweight．
[C] Only 2% of the injuries treated in hospitals are serious．
[D] Injuries increased 1．5 times as many as that during the past decade．
