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【单选题】
25（）
A．great
B．huge
C．setbacks
D．remarkable
A.
You really have to get very old before you realize you’re old. I’m in my middle fifties and I don’t feel (21) yet. However, sometimes I look back at my childhood and (22) things to the way life is for (23) kids. Some things have certainly changed.
B.
One area of change is (24) . Some changes have been improvements. Some changes, on the other hand, have been (25) .
C.
When I started school, most people didn’t have a television; TV was just beginning to get (26) . My father decided to go all out and buy a 16 inch black and white Motorola (27) . I still re-member watching the Lone Ranger save people from the (28) guys on that awesome electronic ma- chine. That was exciting!
D.
Now, (29) have larger pictures in full color. The pictures are clearer and the sound is much more (30) . The new high definition sets are made to rival (31) screens.
E.
The variety and quantity of programming has (32) greatly. There are hundreds of channels and more shows than one person could ever watch. There are many fine entertainment and educational (33) . There’s also a lot of garbage, stuff that most (34) don’t want their kids exposed to. Overall, we have more choices, and that is good.
F.
I wonder what (35) will be like when today’s kids are my age.
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】中心线是指
A.
X线束中心部分的一束X线
B.
X线束中心部分的一条射线
C.
X线束照射在胶片中心的那一条射线
D.
X线束照射在胶片中心的那一束X线
E.
以上均不对
【单选题】50（） A.them B.they C.theirs D.their
A.
Long long ago mankind began to use tools. Throughout the world, you can still find the tools which were used over two million years ago. People made such tools by hitting one stone (36) another. By this means, they got pieces from one of the stones. These pieces of stone were always (37) on one side. People utilized them to (38) skin and meat from some animals that were dead, (39) to make other tools from wood. Mankind needed (40) use tools since, unlike other meat-eating (41) , say lions, they did not have sharp teeth. Tools greatly helped people obtain food more (42) .
B.
Tools helped (43) human intelligence as well when human worked with them. The human brain became bigger gradually, and human beings began to invent a growing number of tools. The stone piece was one of the (44) tools that were used by people, and maybe it was (45) . Some scientists hold it was the key (46) human beings’ success.
C.
A new kind of tool has come into people’s view since 1960, that is, the silicon chip a small chip of silicon crystal. It is a bit (47) than a fingernail, but it is able to (48) several million "bits" of information or so. No doubt that it is an (49) brain.
D.
Each year these chips grow cleverer, however (50) size becomes smaller, what’s more, their cost gets (51) .
E.
It is (52) over two million years that human beings used chips, but human (53) changed so little at that time. Now we have made use of silicon chips for merely (54) years, but our life is changing faster with each passing day.
F.
(55) will human life be like in two decades
【单选题】Questions 19 to 22 are based on the conversation you have just heard.
A.
At a restaurant.
B.
In a shopping mall.
C.
In a library.
D.
In a classroom.