摘要:4.[ 命题目的 ] 主要考查同义词辨析. [ 解题点拨 ] 接在一段距离后表示“---远 .应用away, 故选C.Far一般作表语.

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阅读下面短文,判断下列句子是否符合短文内容,正确的用“T”表示,错误的用“F”表示。

  One Sunday, Cody decided to go sailing in his boat with his friend Dane, but Dane happened to be away.Dane's brother Brett wanted to go instead though he did not know anything about sailing.Cody agreed and they set out to sea.

  Soon they found themselves in a thick fog.Cody was sure they would be hit by a big ship.Fortunately(幸运地)he saw a large buoy(浮标)through the fog and decided to tie the boat to it for safety.As he was getting onto the buoy, however, he dropped the wet rope.The boat moved away in the fog carrying Brett who did not know how to use the radio.He drifted(漂流)about and was not seen until twelve hours later.

  Cody spent the night on the buoy.In the early morning he fell asleep and was having a bad dream when a shout woke him up.A ship, the Good Hope, came up and he climbed onto it and thanked the captain.The captain told him that Brett had been picked up by another ship and the ship's captain had sent out a message.

本文记叙了Cody和Brett去海上航船遇险的故事。主要考查学生的理解判断能力。

(1)

Cody went sailing in his boat with his friend's brother Brett.

(  )

(2)

About sailing, Brett knew a little.

(  )

(3)

Soon they got into trouble because of the thick fog.

(  )

(4)

They drifted about and were not seen until twelve hours later.

(  )

(5)

Brett was saved by the ship, the Good Hope.

(  )
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(8分)材料   苏云金芽孢杆菌生长到一定阶段,菌体内一端形成芽孢,另一端形成一种被称为伴孢晶体的蛋白质晶体。菌体破裂后释放出芽孢和伴孢晶体,伴孢晶体本身并无毒性,是毒素的前体。当昆虫吞食伴孢晶体后,在肠道内碱性环境条件和特定的蛋白酶的作用下,伴孢晶体变成毒素分子,能使小肠上皮细胞萎缩退化,昆虫停食,最后脱水死亡。科学家利用苏云金芽孢杆菌的这个特性,在实验室大量培养,制成生物农药,洒在农作物上,让害虫吃后中毒死亡。或利用基因工程技术,把苏云金芽孢杆菌的抗虫基因转到农作物体内,培育出抗虫品种。请根据上述材料回答下列问题:

(1)上图中,切断a处的工具酶是____________ ,切断b处的酶是             ______。
(2)作为目的基因载体的细菌质粒往往要带有一个抗生素抗性基因,该抗性基因在基因工程中主要用于_____________________________________________________。
(3)苏云金芽孢杆菌的抗虫基因导入棉花细胞是否表达,最简便的检测方法是________________________________________________。
(4)苏云金芽孢杆菌的抗虫基因转到农作物体内后,也能产生伴孢晶体蛋白,说明___________________________。
(5)转基因工程改良动植物品种,最突出的优点是_____________________________ 。
(6)大面积种植抗虫棉对该地区生态平衡会造成怎样的影响?                                                   
①________________                       _____________
②_____________________                          _____。
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