下面关于地下水取水构筑物的说法，不正确的是（）。
A.地下水取水构筑物应位于水质良好、不易受污染的富水地段
B.地下水取水构筑物应靠近主要用水地区
C.地下水取水构筑物的位置应便于施工、运行和维护方便
D.井群用虹吸管集水时，虹吸管应采用钢管或铸铁管。每条虹吸管的长度不宜超过600m，管内流速可采用0.5～0.7m／s，水平管段沿水流方向的向上坡度不宜小于0.001
参考答案：D
阅读下列短文，根据短文内容填写表格，每空限填一词。 The world we live in is full of amazing things. Do you know the following things? ★Chocolate tastes nice but it may make the little dog die. ★We may sleep for eight hours at a time but a snail (蜗牛) may sleep for three years. ★Our ears and nose become bigger when we grow up but eyes keep the same after a person is born. ★You may think a bear walks slowly. In fact, it can run as fast as a horse. ★Cats won’t die if they fall off very high places because they can turn themselves up the right way. ★The largest animal on the earth is the blue whale (鲸). It weighs about 80 tons (吨)—more than 24 elephants. ★Most animals will die soon if they lose the head. But a cockroach (蟑螂) can live for nine or ten days when they have no head. ★Not all birds can fly. About forty kinds of birds can’t fly, like the penguin (企鹅) and the ostrich (鸵鸟).
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