问题 选择题

下列关于两栖类动物的叙述中,不正确的是(  )

A.两栖类指的是既能生活在水中又能生活在陆地上的生物种类

B.两栖类的动物都属于脊椎动物

C.蛙是常见的两栖类动物

D.两栖类动物能够进行有性生殖来繁殖后代

答案

A、两栖动物的幼体生活在水中,用鳃呼吸,经变态发育,成体用肺呼吸,皮肤辅助呼吸,既能在水中生活,又可以在陆地上生活的一类动物,故选项为错误项,符合题意.

B、两栖动物的背部有脊椎骨组成的脊柱属于脊椎动物,不符合题意.

C、青蛙的幼体为蝌蚪生活在水中,用鳃呼吸,成体青蛙既能在水中生活,又可以在陆地上生活,用肺呼吸,皮肤辅助呼吸,为两栖动物的代表,不符合题意.

D、两栖动物的生殖方式为卵生,体外受精,在水中结合形成受精卵,为有性生殖.不符合题意.

故选:A

阅读理解

Kenya is the first country to protect elephants by text messages. Mobile phone SIM cards are inserted(插入) in the collars of elephants. The cards will send a text message when the elephants wander too close to farms, allowing wildlife protectors to drive them off rather than shoot them.

Hungry elephants cause big problems for farmers and villagers in some parts of Kenya when they are searching for food. Two years ago the Kenyan wildlife service had to unwillingly shoot five elephants who continued to destroy crops.

In order to prevent such bad activities, the Elephants charity put a mobile phone SIM card on a huge bull elephant called Kimani. The conservationists(自然保护者) then set up a virtual(虚拟的) fence. Each time Kimani came near the fence, a text message was sent to farmers. So far he’s been stopped from going into the danger area fifteen times.

The project seems to be working successfully as Kimani hasn’t come near a farm for four months. A similar system has now been put into operation in another part of the country.

One of the biggest benefits of the project is that elephants seem to learn from one another, which can help a whole group change their habits.

The elephants can also be tracked using Google Earth software. This is also helping the protectors know where to use their resources to protect the animals well.

小题1:Elephants often cause problems in Kenya, because ______.

A.they are attacked

B.they are angry

C.they are sad

D.they are hungry小题2:What does the underlined word “he” in Paragraph 3 refer to?

A.The protector.

B.The writer.

C.The elephant.

D.The conservationist.小题3:From the passage, we know that ______.

A.the text messages are of little help to the wildlife protectors

B.the project has worked out to be a great success in Kenya

C.a mobile phone SIM card has been put in all the elephants

D.the project has been introduced to all parts of the country

单项选择题 A3/A4型题