阅读下面的短文，掌握其大意，然后从各题所给的四个选项（A、B、C、D）中选出最佳选项，并在答题卡上将该项涂黑。
When I smoked with my family, I would feel so   16  and good that nothing else in the world seemed so   17 . I thought that smoking weed (烟草) was okay since many of my family members and people at my school smoked.  18  ever happened to them.   19  I started smoking weed a lot more during lunch and after school. I never thought   20  of it. At that time I just wanted to smoke. Then I began to   21 in school. I would   22  classes, come home late and spend all my money. I would spend   23  8 to 18 dollars a day. I never thought   24  that marijuana (大麻) had a bad effect on those things. Maybe my coming to class high (神智恍惚) was the reason why I was failing or coming home late. As I continued to smoke marijuana, I began to notice that I would always have the strong desire to smoke and that I would get   25  cigarettes if I smoked those, but I don’t.   26  I have learned more about marijuana, I have   27  the amount of marijuana that I use. I don’t want marijuana to be the most important in my life. I’m not smoking every day, and not spending as much money. Since I have   28  on my habit, I am   29  more money. I’m ready to go back to school and do good, so that I can make myself  50 . Everyone is always saying how weed   31  your mind and how it solves problems. I think it only brings more   32 . Marijuana is not good for your body or your brain. I’m not trying to tell you not to smoke, I’m just letting you know that marijuana can be   33  to your health, and   34  it may cause some long term negative (负面的) effects. Help yourself now, before it is too late. I don’t want to lecture anyone, just   35  my experience with you.
【小题1】

We experience different forms of the Sun’s energy every day. We can see its light  and feel its warmth. The Sun is the major source of evaporation (蒸发) of water from the oceans and lakes. Sunlight also provides the energy used by green plants to make their own food. These green plants then provide food for all organisms (生物) on the Earth.

Much of the energy that comes from the Sun never reaches the Earth’s surface. It is either reflected or absorbed by the gases in the upper atmosphere. Of the energy that reaches the lower atmosphere, 30% is reflected by clouds or the Earth’s surface. The remaining 70% warms the surface of the planet, causes water to evaporate, and provides energy for the water cycle and weather. Only a tiny part, approximately 0.023%, is actually used by green plants to produce food.

Many gases found in the atmosphere actually reflect heat energy escaping from the Earth’s surface back to the Earth. These gases act like the glass of a greenhouse in that they allow energy from the Sun to enter but prevent energy from leaving. They are therefore called greenhouse gases.

When sunlight strikes an object, some of the energy is absorbed and some is reflected. The amount reflected depends on the surface. For example, you’ve probably noticed how bright snow is when sunlight falls on it. Snow reflects most of the energy from the Sun, so it contributes to the low temperatures of winter. Dark-coloured surfaces, such as dark soil or forest, absorb more energy and help warm the surrounding air.

1.According to the passage, the root cause for weather changes on the Earth is ______.

2.Only a small part of the Sun’s energy reaches the Earth’s surface because most of it _______________.

3.We learn from the passage that _______________.

We experience different forms of the Sun’s energy every day. We can see its light and feel its warmth. The Sun is the major source of energy for our planet. It causes the evaporation (蒸发) of water from the oceans and lakes. Sunlight also provides the energy used by green plants to make their own food. These green plants then provide food for all organisms(生物) on the Earth.

Much of the energy that comes from the Sun never reaches the Earth’s surface. It is either reflected or absorbed by the gases in the upper atmosphere. Of the energy that reaches the lower atmosphere,30% is reflected by clouds or the Earth’s surface. The remaining 70% warms the surface of the planet, causes water to evaporate, and provides energy for the water cycle and weather. Only a tiny part, approximately 0.023%, is actually used by green plants to produce food.

Many gases found in the atmosphere actually reflect heat energy escaping from the Earth’s surface back to the Earth. These gases act like the glass of a greenhouse in that they allow energy from the Sun to enter but prevent energy from leaving. They are therefore called greenhouse gases.

When sunlight strikes an object, some of the energy is absorbed and some is reflected. The amount reflected depends on the surface. For example, you’ve probably noticed how bright snow is when sunlight falls on it. Snow reflects most of the energy from the Sun, so it contributes to the low temperatures of winter. Dark-coloured surfaces, such as dark soil or forest, absorb more energy and help warm the surrounding air.

1.According to the passage, the root( 根本的) cause for weather changes on the Earth is         .

A．the atmosphere surrounding the Earth

B．water from oceans and lakes

C．energy from the Sun

D．greenhouse gases in the sky

2.Only a small part of the Sun’s energy reaches the Earth’s surface because most of it is         .

A．absorbed by the clouds in the lower atmosphere

B．reflected by the gases in the upper atmosphere

C．lost in the upper and lower atmosphere

D．used to evaporate water from the oceans and lakes

3.We learn from the passage that         .

A．all living things on the Earth depend on the Sun for their food

B．a forest looks dark in winter because it absorbs solar energy

C．only 0.023% of the energy from the Sun is made use of on the Earth

D．greenhouse gases allow heat energy to escape from the Earth’s surface

The Internet and the World Web (网) are great places to be right now. We use the word “place” because so many of the things you can do online are similar to the things you can do wherever people gather together－in homes, schools, libraries, shopping centers, or at family reunions or town meetings. The Net allows people to learn shopping, find important information, and communicate, whether they’re local, global or simply virtual (虚的).

The Web is useful. You can find old friends online. You can research and book flights, check the weather, find breaking news, andfind out information about schools and colleges. Yon can even place an order for books, CDs, computers and cars.

The Internet is also fun. You can write to old friends or check out their web pages, enjoy web-based soap operas, laugh at online jokes, join in a live Net Event, chat with other Internet surfers(漫游者), check to see if your name appears anywhere on the Web.

Millions of users log on to the Net every day, and it’s not just to do research. There’s a lot of fun there. That’s one reason why it’s called web “surfing”.

Of course, the first step to use the Web for business or for fun is learning how to work a “web browser”. If you’re new to computers, it may take a while before you are completely comfortable with your browser. Don’t worry. You don’t have to be a computer whiz. The basics of a web browser are very much like the basics of modem computers－learning how to point and click the mouse, learning how to scroll up and down a page of text, and learning how to use pull-down menus. Again, be patient. There’s no time limit on web surfing. Give yourself a chance to explore (探索) the browser itself while you explore the Web.

1. The writer compares the Web to_______.

A. places to visit　　　　　　　　　　　　　　　　 B. places to gather together in

C. some easy job 　　　　　　　　　　　　　　  D. things you can do online

2. We can learn from the text that the Web is not only_______ but also_______.

A. of great use; of great value 　　　　    B. of great use; of great enjoyment

C. useful; funny 　　　　　　　　　　　　　　   D. of some use; of a little interest

3. The underlined word “whiz” probably refers to a person who_______.

A. is a computer expert　　　　　　　　　　   B. is a computer fan

C. is lost in computer games 　　　　　　　　　　 D. owns a computer company

4. To use the Web, all we have to do is to learn how to_______.

A. use the computer mouse　　　　　　　　 B. scroll up and down a page of text

C. use pull-down menus 　　　　　　　　    D. all the above