Question

【題目】根據(jù)短文內(nèi)容的理解,選擇正確答案。 When the weather is hot, you go to a lake or an ocean. When you are near a lake or an ocean, you feel cool. Why? The sun makes the earth hot, but it can not make the water hot. Though the air over the earth becomes hot, the air over the water stays cool. The hot air over the earth goes up, then the cool air over the water moves in and takes the place of the hot air. When you are near a lake or an ocean, you feel the cool air when it moves in. You feel the wind and the wind makes you cool.
Of course, scientists cannot answer all of our questions. If we ask "Why is the ocean full of salt?" scientists will say that the salt comes from rocks. When a rock gets very hot or very cool, it cracks (崩裂), and rain falls into the cracks. The rain then carries the salt into the earth and the rivers. The rivers carry the salt into the ocean. But then we ask "What happens to the salt in the ocean? The ocean does not get saltier every year." scientists are not sure about the answer to the question.
We know a lot about our world. But there are still many answers that we do not have, and we are curious(好奇的).
（1）In the first paragraph, the underlined word "it" refers to .
A.The hot air over the water
B.The cool air over the earth
C.The hot air over the earth
D.The cool air over the water
（2）Now scientists know .
A.what makes people feel cool near a lake or an ocean in summer
B.everything about the ocean
C.what happens to the salt in the ocean
D.why the ocean does not get more saltier
（3）A rock crack when .
A.rain falls
B.it gets very hot
C.it gets very cold
D.Both B and C
（4）Which of the following is NOT mentioned in this passage?
A.The reason why people feel cool when they are near a lake or an ocean in hot weather.
B.The reason why the ocean doesn't get saltier every year.
C.The reason why the water in the ocean is salty.
D.The reason why rocks crack.
（5）The main idea of this passage is that .
A.people feel cool when they are near a lake or an ocean
B.scientists can explain many things, but not everything
C.scientists can explain everything about the ocean
D.the salt in the ocean comes from rocks

Answer 1

【答案】
（1）B
（2）A
（3）D
（4）B
（5）B
【解析】文章大意：這篇文章講述了科學(xué)家能夠回答一些問(wèn)題,但并不能回答所有問(wèn)題。我們知道為什么夏天的海邊和湖邊會(huì)感覺(jué)涼快,知道海里的鹽來(lái)自哪里,但是科學(xué)家們也不確定海里的鹽會(huì)怎么樣。還有很多的問(wèn)題等著我們?nèi)ソ鉀Q。
（1）考查細(xì)節(jié)理解題。When you are near a lake or an ocean, you feel the cool air when it moves in.根據(jù)上文可知,太陽(yáng)使陸地升熱,卻不能使水變熱。地面的熱空氣上升后,水上的冷空氣進(jìn)來(lái),然后取代了熱空氣的位置,這時(shí)候你在湖或海的附近時(shí),你感到冷空氣在流動(dòng)。故it指代陸上的冷空氣。故選B。
（2）考查細(xì)節(jié)理解題。A. What makes people feel cool near a lake or an ocean in summer. 夏天在湖泊或海洋附近時(shí),什么讓人們感到?jīng)鏊�。B. Everything about the ocean. 海洋的一切。C. What happens to the salt in the ocean. 海洋的鹽會(huì)發(fā)生什么事。D. Why the ocean does not get more saltier. 為什么海洋不會(huì)變得更咸。根據(jù)第一段可知A正確。
（3） 考查細(xì)節(jié)理解題。根據(jù)第二段第三句When a rock gets very hot or very cool, it cracks (崩裂) ,可知選D。
（4） 考查細(xì)節(jié)理解題。根據(jù)第一段第一句When the weather is hot, you go to a lake or an ocean. When you are near a lake or an ocean, you feel cool. Why?與第二段第二句If we ask "Why is the ocean full of salt?" scientists will say that the salt comes from rocks. When a rock gets very hot or very cool, it cracks (崩裂), and rain falls into the cracks. The rain then carries the salt into the earth and the rivers. The rivers carry the salt into the ocean.可知A,D和C在短文中被提及。故選B。
（5）考查主旨理解題。A. people feel cool when they are near a lake or an ocean. 在一個(gè)湖泊或海洋附近時(shí),人們感到?jīng)鏊�。B. scientists can explain many things, but not everything. 科學(xué)家可以解釋很多東西,但不是所有的東西。C. scientists can explain everything about the ocean.科學(xué)家可以解釋海洋一切東西。D. the salt in the ocean comes from rocks. 海里的鹽來(lái)自石頭。通讀全文，可知大意是科學(xué)家能夠回答一些問(wèn)題,但并不能回答所有問(wèn)題。故選B。