【推荐2】Koalas are one of the longest-sleeping animals in the world. How many hours do people sleep every day? Maybe 10 _________? Koalas need more than 20 hours a day! Many people think they’re lazy, but it’s not _________! They sleep so much _________ they have a strange diet. As you can see, koalas only eat eucalyptus leaves (桉树叶). They can _________ more than 0.5 kg of these leaves each day. But there is one big _________: Eucalyptus leaves are not tasty and they are low in calories (卡路里). They get very little energy _________ them. Think about eating salad all day. You would look as sleepy as _________ do!

What’s more, the leaves are highly toxic (有毒的)! If other animals eat them, they will die. Luckily, koalas have a strong digestive system (消化系统). It works very hard to break down the toxins(毒素). It is so _________! To save energy, koalas sleep nearly all day long.

Now you know why koalas spend so _________ time in the tree. Don’t call them _________ anymore!

【推荐3】Many people like pandas very much. They are very ______. Most of them live in Sichuan, ______. They ______ white hair, but their shoulders, legs, ears and eyes are ______. Pandas are usually heavy, but they can climb trees like other ________. Pandas’ _______ food is bamboo leaves. But long long ago (很久很久以前), pandas liked to eat meat. It _______ pandas a lot of time to have food every day. When pandas are full (饱的), they like _______. They relax for many hours every day. Chinese people love pandas very much. And China made pandas as mascots of the 2008 and 2022 Beijing Olympics. However, there are not many pandas in China today. _______ some people cut down too many bamboo trees, pandas can’t find enough (足够的) food. I think we must _______ them.

It is Mary’s birthday. She gets a _________ from her uncle. “Dear Mary,” he _________ in the letter, “Happy birthday! I’m sending you some chickens. They will arrive tomorrow. I hope you will like them, Uncle Tony.”

Mary is very _________. She likes eating eggs and chicken. “I can keep the chickens for their eggs or eat them,” she _________.

When the chickens arrive at 7:00 a.m. the next day, they are put in a box. Mary takes the box off the truck and begins to carry _________ into her garden, but the box is so _________ that she drops (落下) it. The chickens all run out. They run here and there. Mary spends hours in trying to _________ them.

A few days _________, Mary tells her uncle she drops the box and the chickens run everywhere. It takes her the whole _________ to look for them. “Do you find them all?” asks her uncle. “I hope so.” Mary answers. “But I only catch eleven of them.” “This is very interesting. I only __________ you six,” her uncle says with a smile.

Discovery

In a vacation, my brother and I decided to go off for a long walk while we were staying in the countryside. On the top of a mountain, a sudden ______ began to fall and the temperature dropped a lot. It became so dark that we couldn't see the path clearly.

It was difficult for my brother and me to ______ over rocks in the heavy rain. As I paused（停）under a tree, I noticed a cave between two huge rocks. I suggested to make a fire and warm ourselves in the cave. So my brother and I picked up some wood that was still ______ and carried it back to the cave. I lit the fire with matches in my pocket. We sat down and ate our sandwiches around it.

In the cave, the flames ______ light onto its ceiling.“Funny,”said my brother, “You can see shapes on the rock. One of them looks a bit like a deer. There is its head and there are its feet. It almost looks as if someone has ______ it.”I took a burning branch（树枝）and went to examine the rock. Now I could see a shape of a smaller deer. Then we went further into the cave. In front of us was a wall of ______. There were birds, too, with the eyes carved（雕刻）out of the rock and painted white. We could see a snake, a bear, a wolf, but no people.

At that night, my brother and I were so ______ that we did not get to sleep until very late. We talked and wondered about the people who had lived here before. Neither of us realized that these carvings and paintings ______ back 15,000 years, nor that the title in the newspaper would be“The Find of the Century-Children Aged 13 and 11 Discover Cave Paintings.”

【推荐3】We had a math contest today. I am good at math, so I_________it quickly. I was the first one to_________the paper. I was sitting on my seat relaxing, while the teacher shouted, "Whose paper is this?" I made no response. Some time later, I suddenly realized that I didn’t sign my name on the paper. I stood up_________and went to the teacher. She helped me find the_______paper and sign my name. I would have failed the contest if she hadn’t_________me in time.