Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
42. The first virus appeared _________.
A.In 1986 B. In 1987 C. In 1990 D. On Friday 13th
43. Computer viruses became extremely dangerous _________.
A.on Friday 13th
B. when the first virus called Brain was created
C. when computers were connected to e-mail and Internet systems
D. in 1987
44. Which statement is TRUE about computer viruses?
A.The Melissa virus is part of the Internet system.
B. The virus Jerusalem is harmless because it did nothing.
C. A computer virus can kill people.
D. computer virus is a program.
45. A “remedy" (paragraph 4) refers to __________.
A.viruses B. programmers C. medicine D. antivirus software
46. The word "which" in the last paragraph refers to __________.
A.a computer virus created by people B. a computer virus
C. a few hours' stoppage caused by people D. the stoppage of the whole world caused by a computer virus
Read the passage and choose the best answers:
Louis Braille was born in France in 1809 . His father had a small business . He made shoes and other things from leather . Louis liked to help his father in the store even when he was very small . One day when Louis was 3 years old , he was cutting some leather , suddenly the knife slipped and hit him in the eyes . He soon became completely blind .
When he was ten years old , he entered the National Institute for the blind in Paris . One day his class went to visit a speacial exhibit by a captain in the army . One thing in the exhibit was very interesting for Louis . It showed messages in code . Armies send messages in secret codes so no - one else can read them . The captain wrote this code in raised letters on very thick paper .
Louis thought a lot about this code . Then he decided to write in the same way so the blind could " read " with their fingers . It is very difficult to feel the differences between raised letters . Instead of letters , Louis used a " cell " of six dots . He arranged the dots with two dots across and three down . So blind people can read and write even write music by Braille .
1 . It is difficult to feel the differences between ................................
A . arrangements of dots
B . coded messages
C . raised letters
D . a system of raised dots
2 . Louis Braille's father made things from .............................
A . codes
B . exhibit
C. leather
D . wood
3 . Which of these sentences is probably not true ?
A . Braille invented a system of reading for blind people .
B . Braille system is used for everyone .
C . Braille visited an exhibit of codes
D . Braille was an intelligent boy .
4 . When Louis was ten years old , he began to study ......................................
A . at a local school
B . at a special school for the blind .
C . in the army
D . at a university .
To be successful in the business market,it is vital for a company to keep up with all the latest technoligical development.
Nowadays it is widely accepted that running a company without computers,in particular,is virtually impossible this is why businesses are so keen to hire the best people available for their technology departments.
Apart from the needs of the technology department,it is important that almost all employees have some degree of familiarity with personal or desktop computers,even if this involves no more than the completion of a basic computer course.Like all new things,however,most people will only become comfortable with using computers after practical experience.
Thanks to computers,today's businesses are run and managed with far less difficulties than companies could hope to achieve in the past.For example,computers enable the organization of huge amounts of information and greatly speed up the preparation.
Làm không đúng thì mong cậu thông cảm nhé !
EX1 :Read the text below and choose the correct word for each space. For each question 1 -10, mark the correct letter A, B, C or D on your answer sheet.
Robots can work in places humans can't easily get to. These include deep oceans on distant planets or on sites with bad pollution. Robots are also used in factories (1) ________ they can work more quickly and accurately than a human, and without needing to rest. Improvements in technology over the past 50 years have (2) _______ that scientists are now able to create very clever robots. The most complicated of these can make (3) _______ for themselves, learn new things, and deal with problems. However, while robots that look like people are very common in science fiction films, they are very (4) _______ in real life. Making a machine that can balance and move on two legs is a real challenge and is unnecessary for most of the jobs we need robots to do for us. However, a Japanese robot (5)_____ as Asimo does walk on two legs and can even climb up and down stairs.
1. A. unless B. because C. although D. despite
2. A. intended B. supposed C. said D. meant
3. A. results B. decisions C. thoughts D. options
4. A. rare B. thin C. little D. narrow
5.A. called B. known C. named D. said
EX2: Mark the letter A,B,C or D on your answer sheet to indicate the word(s) CLOSET in meaning to the underline word(s) in each of the following question.
Her father died after he had brought up all of his children.
A. was in the dust
B. was out of this world
C. was the apple of her eyes
D. called it a day
1 B
2 D
3 B
4 C
5 D