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【题目】阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。

What makes the sea tum red and causes thousands of fish to dieAs far back as anyone could rememberthe blame was placed on the "red tides. " In 1947scientists finally connected the red tides with a microscopic sea organism(有机体)1callthe dinoflagellate.

The dinoflagellate is so tiny 2 6000 of these organisms may be contained in 3 single drop of water. It stands on the borderline between plant and animal in its clasification. it produces its own foodas plants do. But it moves 4freeand eats other organismsas animals do.

Dinoflagellates are normally only one of the many kinds of organisms found in plankton. Plankton is the name given to all very small 5formof sea life. Howeverwhen the air and water 6becalm and warmdinoflagellates multiply with 7amazesped. The surface of the water appears 8coverwith a red carpet.

The dinoflagellates give off a poison. Many fish die. Their bodies are washed up on the beach. Beaches are not fit 9 any use. Fish that are not killed may become 10poisonto animals or people who eat them. Commercial fishing comes to a stop.

As dinoflagellates consume all the food and oxygen in an areathey die. After a timethe sea returns to normal. But when conditions are rightthe red tide comes again.

【答案】

1called

2that

3a

4freely

5forms

6are

7amazing

8to be covered

9for

10poisonous

【解析】

这是一篇说明文。主要内容是据科学家的调查可知把赤潮与微小的海洋生物叫做腰鞭毛虫连接在一起,并阐述了这种海洋生物对海洋产生的影响。

1考查非谓语动词。句意:1947,科学家最后连接赤潮与微小的海洋生物叫做腰鞭毛虫。分析句子结构可知,空处填非谓语动词,再根据句意可知,dinoflagellatecall是被动关系,故填called

2考查状语从句。句意:这些生物的腰鞭毛虫是那么小,这些有机体的6000个单位可能包含在一滴水里。分析句子结构可知,空处填从属连词,再结合句意可知,so…that…用来引导状语从句,意为“如此……以至于”,故填that

3考查冠词。分析句子结构可知,空处填冠词,再根据句意可知,a drop of意为“一滴……”,与题意相符,故填a

4考查副词。句意:但是它自由移动和吃其他生物,就像动物一样。分析句子结构可知,空处填副词,再根据句意可知,freely意为“自由地”,与题意相符,故填freely

5考查名词的数。根据空前all可知,all后加名词复数,意为“所有……”,故填forms

6考查主谓一致。句意:然而,当空气和水是平静和温暖。分析句子结构可知,空处填时态,结合语境可知,此处用一般现在时,airwater都有独立的含义,且不构成成套名词,故用are

7考查形容词。句意:鞭毛藻类以惊人的速度繁殖。分析句子结构可知,空处填形容词,再结合句意可知,amazing意为“令人惊讶的”符合句意,故填amazing

8考查固定搭配。句意:水面似乎被红地毯覆盖着。根据句意可知,appear to be是固定搭配,意为“似乎好像”,且the surface of the watercover之间是被动关系,故填to be covered

9考查固定搭配。句意:海滩不适合任何用途。根据句意可知,be fit for是固定搭配,意为“适合、胜任”,与句意相符,故填for

10考查形容词。句意:未被杀死的鱼可能对动物或食用它们的人有毒。分析句子结构可知,become是系动词,故空处填形容词,再结合句意可知,poisonous 意为“有毒的”,故填poisonous

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