15.We've talked about snails(蝸牛)and their slow move.But much of the time snails don't move at all.They're in their shells sleeping.
Hot sun will dry out a snail's body.So at the least sign of hot sun,a snail draws its body into its shell and closes the opening with a thin cover.Then it goes to sleep.A snail will die in a heavy rain.So whenever it rains,it goes inside its shell house and goes to sleep.A snail can sleep for as long as it needs to.It can take a short sleep.Or it call sleep for days at a time.And it spends all the winter months in its shell,asleep.
In spring the snail wakes up.Its body,about three inches long,comes out of from the shell.
When hungry,the snail looks for food.It can't see very well.Its eyes,at the ends of the top feelers are very weak.But its sense of smell is very strong.It helps the snail to the new greens.Then the snail's little mouth goes to work.
A snail's mouth is no longer than the point of a pin(針).Yet it has 256,000teeth!The teeth are so small that you can't see them.But they do their work.If you put a snail in a hard paper box,it will eat its way out.And if a snail wears out its teeth,it will grow new ones.
Mostly,a snail looks for food at night.But on cloudy days it eats in the daytime.It eats all day long.A snail can go on eating for hours and never feel full.
46.A snailC.
A.moves more slowly in the daytime
B.has thousands of feet
C.sleeps much of the time
D.doesn't move at all
47.The underlined word"draw"in the second paragraph meansD.
A.to make with a pen
B.to keep away from
C.to move to end
D.to push
48.From the story we knowB.
A.the snail's shell is very thin
B.a(chǎn) snail can't see well
C.the snail's nose is quite short
D.the snail's body changes with seasons
49.A snail goes to sleep whenD.
A.it feels hungry
B.it is put in a paper box
C.spring is coming
D.it rains heavily
50.Which of the following in NOT TRUE according to the passage?A
A.The snail,s teeth can,t be worn out.
B.In winter the snail doesn't eat or move.
C.A snail doesn't like living under the sun.
D.The snail's strong sense of smell helps to find things far away.
分析 這篇短文是關(guān)于蝸牛的.蝸牛大部分的時間都在睡覺,不管是晴天還是雨天,它都縮在殼里睡覺,冬天還會冬眠.春天它就醒了,用它的嗅覺來尋找食物.蝸牛有很多牙齒,可以用來吃東西,而且牙齒會更換.它一般晚上尋找食物.
解答 46.C 細(xì)節(jié)理解題.根據(jù)第一段But much of the time snails don't move at all.They're in their shells---sleeping.但是大部分時間蝸牛是一動不動的,他們躲在殼里睡覺,故選C.
47.D 詞意猜測題.根據(jù)后半句:and closes the opening with a thin cover用一個薄薄的殼和外界隔離開來,可以推斷出此處句意:蝸牛把身子縮回殼里.故選D.
48.B 細(xì)節(jié)理解題.根據(jù)第三段It can't see very well.它看不太清楚.故選B.
49.D 判斷推理題.根據(jù)第二段A snail will die in a heavy rain.So whenever it rains,it goes inside its shell house and goes to sleep.大雨可以導(dǎo)致蝸牛死亡.所以不管什么什么下雨,它都躲在殼里睡覺,故選D.
50.A判斷推理題.文中第四段And if a snail wears out its teeth,it will grow new ones.如果蝸牛的牙齒掉了,會長出新的,由此得知蝸牛的牙齒會掉的,故選A.
點評 做題時首先要仔細(xì)閱讀短文,掌握大意,然后結(jié)合具體的題目,找出相關(guān)信息,就可以確定正確答案.