【正文】 vitamin D. So the related gene changes, according to Cheng. Asians have the same version of the gene as Africans, so they probably acquired their light skin through the action of some other gene that affects skin colour, said Cheng. The new discovery could lead to medical treatments for skin cancer. It also could lead to research into ways to change skin colour without damaging it like chemical treatment did on Michael Jackson. 64. The passage mainly tells us that ________. A. people can not change their skin colour without any pain B. the new discovery could lead to search into ways to change skin colour safely C. pop king Michael Jackson often changed his skin colour as he liked D. scientists have found out that people’s skin colour is determined by the gene 65. It can be inferred from the passage that ________. A. nowadays people who want to change their skin colour have to suffer a lot from the damage caused by the chemical treatment B. Europeans and Africans have the same gene C. the new discovery could help to find medical treatments for skin cancer D. there are two kinds of genes 66. Scientists have done an experiment on a darkstriped zebra fish in order to ________. A. find the different genes of humans’ B. prove the humans’ skin colour is determined by the pigment gene C. find out the reason why the Africans’ skin colour is dark D. find out the ways of changing peopl’s skin colour 67. The reason why Europeans are lightskinned is probably that ________. A. they are born lightskinned people B. lightskinned Europeans have mutation in the gen for melanosome production C. they have fewer activities outside D. they pay much attention to protecting their skin D Animals are being killed by hunters in America in a cruel way, says an animal protection anization. There are about 1,000 hunting farms across America whose owners offer hunters an opportunity to kill animals that are kept in fenced areas. Russian boar, zebra, deer, antelope and many other species are raised just to be killed. Farm owners charge hunters thousands of dollars for animals that they kill, many of which are close to extinction (滅絕 ). The Humane Society of the United States says this type of hunting should be stopped because it is not fair to the animals. Many owners raise their animals. Others buy from animal dealers or from zoos and circuses that no longer want them. This means that the animals are not afraid of humans and they are easy to be shot by hunters. Owners of small ranches (牧場 ) keep their animals in fenced areas so that the hunters can get close to the animals before shooting at them. On large farms hunters are taken to areas where the animals are fed sometime of the day. This also makes it easy to kill the animals. The hunters want to keep the heads and chests of the animals they kill to hang as trophies (戰(zhàn)利品 ) on their walls. This means that the animals are usually shot in parts of the body. That means they will suffer a slow and painful death. The hunting is allowed across most of America but some parts of the country have stopped or restricted it. The Humane Society of the United States hopes that it won’t be too long before the rest parts of the country also give up this cruel sport. 68. What can be the best title for the passage? A. Fenced Animals Are in Danger B. Animals Are Easy to Kill C. Hunters Pay to Kill Fenced Animals D. Animal Hunting Should Be Banned 69. One of the main reasons why these animals are easy to be shot is that _______. A. they don’t run very fast B. they are not afraid of humans C. they don’t know how to escape D. the hunters are good at shooting 70. What can we learn from the passage? A. Many animals can run away when hunters want to shoot them. B. It is very cruel to kill the animals in the way mentioned in the passage. C. The Humane Society of the United States considers this kind of hunting as a good sport. D. The animals are usually hung on the walls after being shot. 71. It can be inferred from the passage that _______. A. no measures have been taken to prevent this kind of hunting B. the animals usually get really hungry before dying C. in most parts of America this kind of hunting has been stopped D. people who do this kind of hunting are probably very rich 第二節(jié)：根據(jù)短文內(nèi)容 ，從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。 Unit 22 Environmental Protection 單元檢測題 第二部分：英語知識運(yùn)用 （共兩節(jié)） 第一節(jié) 單項(xiàng)填空（共 25 小題；每小題 1 分，滿分 25 分） 從每題所給的 A、 B、 C 和 D 四個選項(xiàng)中，選出可以填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng) No fight can end, and no friendship can move on, until everyone says these little words : I’m sorry . Sometimes, though, they can be difficult to say. 72 It’s not about winning. Friendships aren’t like the Super Bowl, and there should never be a winner and a loser. When you start fighting with a friend, it may feel important that you “win” the fight by proving you’re right and he is wrong , or by making him be the first to apologize . In reality, you’ll BOTH LOSE if you let your fight ruin your friendship, and you will BOTH WIN if you find a way to heal it. 73 You may have heard the expression.“His pride stood in the way .”It is usually used to describe a person who is so determined to be “ right ” that he lets an opportunity for happiness pass him by forever . 74 Remember: as time goes on, we usually fet who was right and who was w