Reading Comprehension
试题详情
题目：
Which of the following, if true, would seriously undermine the validity of the conclusions drawn from the experiment described in the last paragraph of the passage?
选项:
A、 The algae cells that sank to the bottom of the pond were destroyed only after a time lag of twenty-four hours.
B、 The lateral motility of the algae cells that sank to the bottom of the pond was not impaired.
C、 The water with which the artificial solar pond was diluted contained microorganisms that kill algae.
D、 The algae cells that sank to the bottom of the pond were actually killed by the rapid change in pressure.
E、 The higher salinity brought about through evaporation increased the transparency of the upper levels of water in the pond.
答案:
C
