The sun is setting on a summer night． At the entrance to a deep, dark cave, a few bats fly out and begin swirling high up into the air．More and more of the small, furry creatures appear．Within a few minutes, a whole river of bats is pouring out of the cave, and they keep coming, millions and millions of them．

       Sound like a scary horror movie? Believe it or not, this scene takes place every night, all summer long, at Bracken Cave in Texas, where 20 million bats fly outside to feed on insects．"It is magical," says Jim Kennedy of Bat Conservation International in Austin Texas．"It is one of the most majestic（壮丽的）  animal movements on the planet．"

       Every March or April, Mexican Free-tailed bats migrate up to 1,000 miles （1609 kilometers） from their winter home in Mexico to this cave, where they raise their young．Soon after they arrive, each mother gives birth to one pup．As many as 500 baby bats live crammed into one square foot （30．48 cubic centimeters）of space, and all those bodies create nice warm temperatures to keep them cozy and comfortable．If you've ever lost sight of your parents on a crowded playground, you may be wondering how mother bats recognize their children．They use their sense of smell to tell which pup is theirs when it is．time for the babies to nurse．

       The cave, a quiet place in winter, is full with life all summer-and not just with bat residents．Bat waste soon covers the floor, providing food for tiny organisms（生物体） like bacteria and fungi（真菌类）．And then there are the bugs．

       When the adult bats leave the cave at night to feed, they are helping humans．They eat tons of insects in a single night, including many pests that eat farmer's crops． And they get rid of mosquitoes, too． 

66．In the first paragraph, the author          .

       A．provides some information about bats         B．describes the movement of bats

       C．advises the reader to watch bats          D．stresses the danger of bats in summer

67．By saying “Sound like a scary horror movie?” what does the author mean?

       A．Bats are better horrible characters in films．  B．People tend to feel afraid of bats．

       C．The above scene is somewhat unbelievable．D． The cave mentioned is full of adventure．

68．According to the passage, the reader possibly expects that           ．

       A．no people know how many bats live in Bracken Cave．

       B．a bat mother would have trouble finding her own baby．

       C．bat waste causes much harm to the human environment．

       D．farmers will never have a good harvest without the bats．

69．Which of the following is TRUE about the bats?

       A．They are well protected by farmers．

       C．They benefit from some tiny organisms．

       B．They smell better than other animals．

       D．They travel from Mexico to America yearly．

70．From the second paragraph, we can know Kennedy's opinion of the bat's flying in group is        .

       A．mysterious         B．frightful             C．crazy               D．enjoyable

As I understand, if scientists produced a human clone, there would be a great risk of it having a disease. Nobody seems to understand the ageing process of a clone. It would be terrible if a baby was the age of its parent at     31   . Its cells would grow old fast and it would die young.    32    until the technique is perfectly safe, it should be     33   .
I'd love to have a clone of     34   . I often wish I had a twin sister, someone who    35   me in everything. So why not a clone? Well, the idea    36   be fun but I'm not sure if it would be     37   . I think we would be playing with fire if we let scientists go ahead with     38   cloning. There are so many     39   
involved that all research in this area should be strictly controlled.
There are so many arguments     40    cloning that it is difficult to get anyone to consider the possible benefits. I am     41    that it is a technique which could be beneficial. The most obvious use would be for childless     42   . They would be able to have babies with their own genetic material. I don't see what's wrong with that.
Imagine a child     43    up knowing that his or her mother is really a sister or a brother. The emotional     44    on the child would be     45   . Or a child who was cloned from a dead brother or sister. What kind of emotional pressure would they feel, knowing they were made as a replacement for another? The whole idea
    46    me!
It's all very good to ban human cloning but scientists should be allowed to   47   
research. If they don't, we may     48    important benefits for our society, such as producing body organs. A clone is an     49    copy of a person with the same gene. Therefore, it is the     50    donor for an organ(器官) transplant.

People in the United States honor their parents with two special days: Mother’s Day, on the second Sunday in May, and Father’s Day, on the third Sunday in June. These days are set aside to show love and respect for parents. They raise their children and educate them to be responsible citizens. They give love and care. These two days offer a chance to think about the changing roles of mothers and fathers. More mothers now work outside the home. More fathers must help with child-care.

These two special days are celebrated in many different ways. On Mother’s Day people wear carnations. A red one stands for a living mother. A white one shows that the mother is dead. Many people attend religious services to honor parents. It is also a day when people whose parents are dead visit their graves. On these days, families get together at home and in restaurants. They often have outdoor BBQs for Father’s Day. These are days of fun and good feelings and memories.

Another tradition is to give cards and gifts. Children make them in school. Many people make their own presents. These are valued more than the ones bought in stores. It is not the value of the gift that is important, but it is “the thought that counts”. Greeting card stores, florists, candy makers, bakeries, telephones companies and other stores do a lot of business during these holidays.

Which is NOT a reason for children to show love and respect for parents?

A. Parents bring up children.       

B. Parents give love and care to children.

C. Parents pass away before children grow up.

D. Parents educate children to be good persons.

What do you know from the passage?

A. Mother’s Day and Father’s Day are both in May.

B. Not all the children respect their parents.

C. Fewer women worked outside the home in the past.

D. Fathers are not as important as mothers at home.

Which do you think is right about “carnation”?

A. It only has two kinds of color.

B. It is a special kind of clothes people wear on Mother’s Day or Father’s Day.

C. People can wear carnations only on the second Sunday in June.

D. It’s a kind of flower showing love and best wishes.

What do you think “florists” do?

A. They sell flowers.                  

B. They made bread.

C. They offer enough room for having family parties.

D. They sell special clothes for Mother’s Day and Father’s Day.