Computers cannot make mistakes. Stories have been heard sometimes about computers paying people too much money or sending them (1)_____ for things they didn’t buy. These mistakes ae made by the programs. Some years ago an American computer-controlled rocket went (2)____ and had to be destroyed. The accident has been caused by a small mistake in one line of the program, which (3)______ the USA 18 million dollars. Criminals have found that “computer (4)_____ are a lot easier than robbing a bank.” Hundreds of millions of dollars are stolen from businesses every year by people (8)______ the information in computers.
Điền vào số 4
A. robberies
B. burglaries
C. thieves
D. crimes
Đáp án D
Giải thích: A. robberies: vụ cướp
B. burglaries: vụ trộm
C. thieves: tên trộm
D. crimes: hành vi phạm tội
Danh từ được chọn là danh từ chung nhất, nên D là đáp án (vì nó bao quát các đáp án còn lại).