they should do about the hole in their roof is their most pressing problem．( )A．ThatB．How oftenC．WhatD．Why 题目和参考答案——青夏教育精英家教网—

题目内容

5．________ they should do about the hole in their roof is their most pressing problem．（　　）

A．

That

B．

How often

C．

What

D．

Why

分析如何修复屋顶上的那个洞是他们最急迫的事情．

解答答案：C．
分析句子的结构可知，________ they should do about the hole in their roof 为句子的主语部分，也就是说该部分需要一个用来引导主语从句的引导词，且该引导词在主语从句中作动词do的宾语，所以需要使用what来引导；that引导主语从句时不作任何成分，how often表示频率，why表示原因；均不符合语境；故选C．

点评本题考查名词性从句中的主语从句，要会分析句子的成分，并且掌握what的用法．

练习册系列答案

17．My wife，daughter，and I moved into our home nine years ago and we spent a lot of time and energy in the yard to get it looking like it does today．We live on a corner，higher than street level，and the entire side of the yard is surrounded by a professionally built rock wall．The front of the house though is another story because instead of a wall along the sidewalk，the rocks appear to be just thrown up onto the dirt as if someone were in a hurry to finish．
We did the best we could with what we had to work with and called this area our"rock garden"．Whenever we had leftover flowers or plants，Denise or I would stick them out front，just to bring some color to the area．We would do all of the yard work on our own，even the tiring weed-pulling．
Last summer I had reached the end of the rock garden and found a tiny little plant that I could not immediately identify，I knew I didn't plant it and Denise claimed that she didn't either．We decided to let it continue growing until we could figure out what it was．
Weeks passed and as I made my way back to the mystery plant，it appeared to be a Sunflower with a tall skinny stalk（茎，杆） and only one head on it．I decided to baby it along and weed around it．As I pulled rocks from the area to get to the weeds，I noticed something unusual．The Sunflower had not started where I saw the stalk begin．It actually had begun under a big rock and grown under and around it to reach the sun．
That's when I realized that if a tiny little Sunflower didn't let a big rock stand in its way of developing，we too have the ability of doing the same thing．Once our environment begins to see that we believe in ourselves like that little Sunflower，we can attain the same nourishment（营养） and growth as well．
Stand tall like the Sunflower and be proud of who and what you are and the environment will begin to support you．You will find a way to go under or around your big obstacle in order to reach your desires．

25．Why is the front of the house another story according to the author？D
A．The workers finished it in a hurry．
B．There is a wall along the sidewalk．
C．The family view it as a rock garden．
D．The rocks are piled there at random．
26．The author found it unusual thatA．
A．the Sunflower grew under and around a big rock
B．the Sunflower had a tall stalk and only one head
C．the mystery plant turned out to be a Sunflower
D．a rock stood in the way of the flower's growth
27．Which of the following best describes the Sunflower？B
A．Brave and stubborn．
B．Confident and persistent．
C．Optimistic and modest．
D．Mysterious and devoted．

13．假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文．文中共有10处语言错误，每句中最多有两处．每处错误仅涉及一个单词的增加、删除或修改．
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词．
删除：把多余的词用斜线（\）划掉．
修改：在错的词下划一横线，并在该词下面写出修改后的词．
注意：（1）每处错误及其修改均仅限一词；
（2）只允许修改10处，多者（从第11处起）不计分．
In general，our houseparents （学生宿舍管理员） are annoying for boys students in dormitories．I didn't begin to like our houseparents until one night in last week．I was asleep when my alarm clock drops onto the floor and were broken into pieces．After the while，the houseparent on duty opened the door and rushed in．Instead blaming me，he asked me anxious what was going on．Before making sure I was OK，he asked me to go back to sleep and cleaned up itself．Since then，I have completely changed my opinion of our houseparents．They are like our parents，kept all of us safe．

20．Congratulations on the great progress you ________ since last year．（　　）

Do you drink water that's been left sitting out overnight or even for another day? Have you noticed it tastes different?

Tap water that has been left to sit out slowly begins to acquire an off taste. Many people think that this is because of microorganisms(微生物). But that's not what makes old water taste not fresh. For that we can thank carbon dioxide. After about 12 hours, tap water starts to go flat as carbon dioxide in the air starts to mix with the water in the glass, lowering its pH and giving it an off taste. But it's most likely safe to drink.

However, back to those microorganisms. If you use a dirty glass day after day, there is more of a chance of bacteria making themselves known; a risk that increases if you share the glass with another mouth as well. But assuming you use a fresh glass every few days, you probably won't have a problem unless the glass has been touched by dirty fingers, and especially if those dirty fingers went unwashed after using the bathroom.

As for plastic water bottles that have been left out in the sun or in the car, step away from the bottle, warns Dr. Kellogg Schwab, director of the Johns Hopkins University Water Institute. "A chemical called bisphenol-A, or BPA, along with other things used to make plastic can leach(过滤) into your water if the bottle heats up or sits in the sun," he explains. BPA, as you probably know, has been linked to everything from heart disease to cancer. Schwab also adds that plastic used for commercial bottled water isn't meant to be washed or refilled, so use only one time and recycle. Or don't buy them at all; use refillable water bottles instead.

1.Tap water begin to acquire an off taste because of ________.

A. BPAB. the glassC. the microorganismD. carbon dioxide

2.According to Paragragh 2, tap water that's been left sitting out for 12 hours ________.

A. tastes betterB. is still safe to drink

C. contains few microorganismsD. is most likely undrinkable

3.What should we do with plastic water bottles that have been left out in the sun or in the car?

A. Throw them away.B. Refill them with fresh water.

C. Use them after they cool down.D. Clean them and use them again.

4.Which of the following is true about BPA?

A. It is safe for people to use.

B. It is a kind of new material.

C. It can cause great harm to people.