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【单选题】
Passage 3The wheel is called （）
A．
B．complicated
C．strange
D．unusual
B．complicated
C．strange
D．unusual
A.
Passage 3
B.
Man’s first roan invention, and one of the most important inventions in history, was the wheel. All transportation and every machine in the world depend on it. The wheel is the st yet perhaps the most remarkable of an] inventions, because there are no wheels in nature no living thing was ever created with wheels. How, then, did man come to invent the wheel Perhaps some early hunters found that they could carry it. However, the logs themselves weighed a lot.
C.
It must have taken a great prehistoric thinker to imagine two thin slices of log connected, at their centers by a string stick, this would roll along just as the logs did, yet be much lighter and easier to handle, thus the wheel and axle came into being and with them the first cart.
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参考解析：
刷刷题刷刷变学霸
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【单选题】21（） A．in B．of C．from D．on
A.
Everyone uses the expressions AM and PM. But do you exactly know what they mean and how they came into being
B.
As you know, the turning of the earth makes the sun and the stars seem to move across the sky. Daylight,of course, (21) . when the sun rises in the east and ends in the west,when the sun is high (22) the sky, between these two positions, half of the daylight hours have been spent.
C.
Therefore, by noticing (23) the sun stood in the sky, early man know they could tell the time of the day. At night the motion of the stars (24) the same purpose. The important thing in keeping time is to know the exact moment of (25) . For each of us,wherever we are, noon is when the sun is directly over head. Think of an imaginary line (26) the sky, stretching from the north point of your horizon just to the south point.
D.
When the sun cross your meridian (子午线), it is noon for you. When the sun still (27) of this line, or the meridian, it is morning. After the sun has crossed this line, it is (28) .
E.
The Latin word for" midday" is" deridian" , (29) which comes our word meridian. So AM is an abbreviation(缩写词) for "ante meridian " ,of before midday, and PM for after midday. Each of the world’s time zones(时区)is about fifteer degrees wide in longitude(经度) ,which is about the distance the sun moves through the sky in an hour. (30) lives in the same zone observes noon at the same moment. In this way, the time is different by one hour. as you move through each time zone.
【单选题】关于PC软件的描述中，以下哪个说法是错误的______。
A.
软件包括各种程序、数据和有关文档资料
B.
PC除可以使用Windows操作系统外，还可以使用Linux操作系统
C.
C++语言编译器是一种系统软件，它需要操作系统的支持
D.
Windows操作系统的画图、计算器、游戏都是系统软件
【单选题】李某在一次意外事故中坠下山崖，就此下落不明。现已3年过去，李某的合伙人王某申请宣告其死亡，但李某之妻及其父母、子女坚决不同意。人民法院应如何处理( )。
A.
李某下落不明未满法定期限，裁定驳回王某的申请
B.
应以李某之妻的意见为准，不得宣告死亡
C.
应以多数人的意见为准，不得宣告死亡
D.
应以利害关系人王某的意见为准，宣告其死亡
【单选题】有下列程序段: #include ＜iostream＞ using namespace std; int main() char b[] = "Hello,you"; b[5] = 0; cout＜＜b＜＜end1; return 0; 执行此程序后，得到的输出结果是( )。
A.
Hello,you
B.
Hello0you
C.
Hello
D.
0