Her great-grandmother
Her twin at the age of 20
Her twin at the age of 40
Her twin at the age of 60
Her twin’s great-grandchildren
第1题:
A
When you look at the sky at night,the moon looks bigger than the stars. In fact,the moon is much smaller than the stars.It is much smaller than the earth. But the moon is much closer to us than any star. That is why it looks so big. If you hold a coin close.to your eye,it looks big.If you look at it across the room,it looks small.The moon moves around the earth. It makes one trip in about four weeks. The moon looks flat(扁的)to us. But it is a round ball,like the earth.People once thought the moon had fire(火) on it. They thought the fire made it bright.Now we know the moon is like a mirror( 镜子 ). It gets its light from the sun Our sunlight comes from the sun,too: What is the sun? The sun is star. The stars we can see have their own light. There are many big stars we can-t see. Their light has burned out. Others are still bright,but they are so far away that we can-t see them. The sun looks bigger and much brighter than other stars because it is the nearest of all stars. The sun and the other stars we see are very hot,but the air around us saves us from(使------免于) the heat(热量) of the sun.The sun gives us light and warmth.It makes plants grow and leaves turn green. It makes life possible on our earth.It is a life-giving star.
( )21. The moon looks bigger because__________ .
A. some stars are smaller than it
B.it is between the sun and the earth
C.it is the closest to the earth
D.it is very bright
第2题:
It can be learned from the passage that about four billion years ago ______.
A. the earth was in molten state
B. the earth surface temperature was above 100℃
C. the earth surface temperature was below 100℃
D. rain water could remain on the earth
43.答案为B。根据第一段最后一句及第二段内容可知,雨水在地表温度降到水的沸点以下才能停在地表,由此可知大约在四十亿年前,地表温度应在沸点以上。
第3题:
There are two types of twins: identical and non-identical twins. Identical twins are formed from a single egg in mother's body which divides to form. two separate babies. Identical twins look the same and are often dressed by their parents in clothes of the same colors. It is often difficult to tell identical twins from each other, even when they are standing side by side. Non-identical twins come into being when the mother produces two separated eggs at the same time, both of which grow to form. babies. In this case the twins look like normal brothers and sisters and are easy to tell one from the other.
In the 1970s and 1980s a scientist did some research into twins. He invited many pairs of identical twins to university and asked them to take part in a week of tests. He was particularly interested in adopted (收养) twins who had been separated at birth. He would give the twins different kinds of tests to study their speed of thinking, their speech, their memory, the ways they saw and heard different things, and so on. Time and time again he found separated twins who preferred clothes of the same color, used the same kind of shaving soap, wore the same shaped square glasses and the same colored socks.
There is a third type of twins, but it is a very unusual one. Twins who are joined together at birth are known in western countries as Siamese twins.
(1)It is difficult to tell identical twins because ____________.
A、they are dressed in the same clothes
B、they are dressed in the same color
C、they are very alike
D、they are standing side by side
(2)If the twins are easy to tell from each other, they are ____________.
A、very probably non-identical twins
B、surely non-identical twins
C、surely identical twins
D、always a brother and a sister
(3)Which of the following is NOT true according to this passage?
A、In the 1970s and 1980s a scientist did some research into the two main types of twins.
B、In the week of tests, he tested their speed of thinking, their speech, their memory and some other things.
C、There were twins who had been separated from each other as soon as they were born.
D、Very often, separated twins were found to choose things of the same kind, the same shape and the same color.
(4)According to the passage, how many types of twins are there actually?
A、one
B、two
C、three
D、four
(5)This passage mainly tells us ____________.
A、the main types of twins
B、what has been found out about twins
C、how twins are formed
D、how a scientist studied twins
第4题:
A.having handled
B.handling
C.handled
D.handles
第5题:
All the other five planets ________.
[A] always appear near the path of the sun
[B] are moving in a way more complicated than the earth does
[C] aren't moving around the sun as independently as the earth does
[D] are moving around the sun at the same speed as the earth does
第6题:
According to the passage, the earth in its very early period was ______.
A. in molten state
B. in water state
C. in rock state
D. a vast ocean
42.答案为A。根据第一段第二、三句,the earth at some time in its very early history became hot enough to melt the materials from which it was formed。While in this molten state作出该项选择。
第7题:
According to the passage, which is true about the ocean?
A. The waters of the ocean came from rain water.
B. The ocean was formed from the, lighter rock materials.
C. The vast single ocean formed about 200 million years ago.
D. The ocean covered the whole surface of the earth at very beginning.
45.答案为A。选项A符合第二段内容。选项B与原文不符;选项C与第三段最后一句及最后一段不符;选项D与原文第二段最后一句不符。
第8题:
A、is
B、are
C、would be
D、will be
第9题:
One day on the moon is _____.
A. two Earth week long
B. two Earth weeks long
C. two Earth weeks longer
D. two Earth weeks length
第10题: