题目内容
It’s _______ you do today that will make a difference in your life tomorrow.
| A．what | B．that | C．how | D．which |
A
解析试题分析：考查主语从句与强调句型。本题实际上是一个强调句型。强调句型的基本结构为：It is/was被强调成分that/who其它成分；其最大的特点是把it is/was…that/who…去掉，句子仍然成立。强调句型强调的是主语从句what you do today。这个主语从句是由what引导，what在句中也作为do的宾语。句意：你今天做的事情会对你明天的生活产生很大的影响。故A正确。
考点：考查主语从句与强调句型
点评：强调句型的基本结构为：It is/was被强调成分that/who其它成分；其最大的特点是把it is/was…that/who…去掉，句子仍然成立。What引导起主语从句，并在主语从句中做do的宾语。
全优考典单元检测卷及归类总复习系列答案Due to climate change, Arctic ice is breaking up earlier in the spring, and its area is decreasing. This is creating problems for polar bears that make their homes off northern Alaska and in Hudson Bay.
Polar bears off Alaska normally hunt and raise their young on ice sheets that float on the ocean. But as the ice has melted, the polar bears have been forced to spend more time on land. There, they have begun to frequent beaches, feeding on the remains of whales caught by native hunters. For polar bears, this food is less nutritious than seals that they normally catch on ice sheets. The shrinking（减少） ice has also forced more polar bears into the ocean. In the past, they only had to swim short distances between ice sheets. But as the ice has shrunk, polar bears have been forced to swim longer and longer distances in the open ocean. This poses a severe danger during rough weather, and an increasing number of drowned polar bears have been observed.
In Hudson Bay, the ice breaks up three weeks earlier in the spring now than it did 20 years ago. Polar bears on Hudson Bay fast（绝食） during the summer, waiting for ice to form in the fall to hunt. Every year, the summer gets longer, and the bears get skinnier. Over the past 25 years, the average weight of the female bears has dropped 68 kg. This loss affects their ability to reproduce, and already the number of births has dropped 15 percent. Unless the bears can learn to survive these climate changes, these giants of the ice may one day disappear.
1.What is Arctic ice doing earlier each year?
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A．It’s freezing. |
B．It’s hardening. |
|
C．It’s melting. |
D．It’s expanding. |
2.What is true of polar bears that are spending more time on land in Alaska?
|
A．Their young are dying. |
|
B．Their diet is changing. |
|
C．Their health is improving. |
|
D．Their families are growing. |
3.What do polar bears in Hudson Bay do during the summer?
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A．They claim territory(地域). |
B．They protect mates. |
|
C．They hunt animals. |
D．They stop feeding |
4.In which publication would you most likely find this passage?
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A．Medical News |
B．Society Today |
C．Wildlife Journal |
D．Design Magazine |