[单项选择]

Carl studied in our high school three years ago. Last August his father found a job in another city and his family moved there. He began to study in a new school and we often write to each other. He often tells me something about the city where he lives now and his studies in the school. So I can know what happens to him.
Last Friday Carl came to our city again. He hoped to stay with his old grandpa during the summer holiday. He’s taller and stronger than before. We swam in the river outside the city together or had a picnic on the island. It surprised me that he has learned to cook when we were travelling in the wild forest. He told me his parents were both busy and sometimes he stayed at home alone and he had to look after himself.
"How do you like your school" I asked.
"Wonderful," said the young man. "It has a tall building and there’re two chemistry labs, two biology labs and three physics ones. And our library is
A. liked foods very much
B. had to look after himself sometimes
C. lived with his grandpa
D. stayed alone

[单项选择]Carl studied in our high school three years ago. Last August his father found a job in another city and his family moved there. He began to study in a new school and we often write to each other. He often tells me something about the city where he lives now and his studies in the school. So I can know what happens to him.
Last Friday Carl came to our city again. He hoped to stay with his old grandpa during the summer holiday. He’s taller and stronger than before. We swam in the river outside the city together or had a picnic on the island. It surprised me that he has learned to cook when we were travelling in the wild forest. He told me his parents were both busy and sometimes he stayed at home alone and he had to look after himself.
"How do you like your school" I asked.
"Wonderful," said the young man. "It has a tall building and there’re two chemistry labs, two biology labs and three physics ones. And our library is big and there’re plenty of books in it."
"I can
A. he often visits me
B. I often telephone him
C. he writes to me now and then
D. I live not far from him

[单项选择]

More than three million years ago, our ancestors were already on the march, rising on two legs to search for food, seek greener lands and, above all, to grow in body and brain. Let’s meet some of them:
1. Australopithecus afarensis
They had ape-like faces and their brains were a third the size of modem humans’ brains. They lived 3-3.9 million years ago. Fossils were found in Ethiopia in 1974.
2. Paranthropus boisei
Covered with fur, they had strong arms and gorilla-like faces. They lived 1-2.5 million years ago. Fossils were found in Tanzania in 1959.
3. Homo habilis
Homo habilis, which actually means "handy man", was the first species to make and use primitive stone tools. They lived 1.6-2.2 million years ago. Fossils were found in Tanzania in 1960.
4. Homo erectus
With skeletons very similar to those of modern humans, they were probably the first to use fire. They lived 30,000-1.8 million year
A. Man could stand on two feet.
B. Man’s brain became big enough.
C. Man’s arms became strong.
D. Man could use the stone tools.

[单项选择] During the last three years, many speculated high about the possible intrusions concerning the corporate computing systems and global computing ’’infrastructure. Fortunately, such and many other frightening predictions did not come true. Surely, technology is the prime reason for this achievement but at the core lies the work environment and the human factor. We have seen that IT leaders in almost all areas have enormously reduced their expenses by adopting winning solutions provided by today’’s security vendors. Does this mean technology a lone is sufficient to deliver No, in the truest sense, policies, their enforcement, along with education and training provide a winning combination to secure corporate computing. As far as technology is concerned, due credit goes to security vendors and service providers for shielding users in many ways, from desktop antivirus software to integrated security appliances. Also, myths about the role played by operating systems in security h
A. they are the ultimate users of the network
B. everyone will have to follow the rules anyway
C. they often make errors in operating their systems
D. security breaches are often caused by their blunders