答案：A

　　2．What does the second paragraph mainly talk about?

　　A．What organic matter is.

　　B．Water is very important to a plant.

　　C．Why minerals exist in a plant.

　　D．What a plant is made of.

　　解析：段落大意题。第二段主要介绍了植物的三种成分：水、矿物质和有机物。

　　答案：D

　　3．What does the underlined word“wilt”in Paragraph 3 probably mean?

　　A．Be cut off.

　　B．Be broken.

　　C．Dry out.

　　D．Turn red.

　　解析：词义猜测题。根据上文It is true that plants need a lot of water to stay healthy and plants are mostly made of water可知，植物需要很多的水来保持健康，植物主要由水组成。再根据If we do not water plants they will...and eventually they will die可知，没有水，植物将会枯萎，最终死亡。由此可推知，画线词含义为“枯萎，干枯”。

　　答案：C

　　B

　　Anaconda

　　This South American creature appears in films or your nightmares.They have weighed over 230 kilograms.It is often regarded as the biggest snake in the world.It is clearly a totally different brand of snake type as it coils(缠绕)all over its target，increasing the pressure until eventually its victim dies.Its jaws are powered by muscle tissue that produces enough power for its more than 100 sharp teeth to pass through the thick skin of a crocodile.They don’t have poison.Sometimes they prefer to camouflage themselves so that they look like their surroundings and swiftly draw back when someone approaches.

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