I. Rewrite each of the following sentences using the word(s) given so that its meaning stays the same.
1. Huge majorities apparently prefer reducing unemployment to fighting inflation. (WOULD RATHER)
2. I'm thinking about buying a new car. (THOUGHT)
3. It's my duty to finish this work before lunch. (SUPPOSED)
4. Do you know about computers? (KNOWLEDGE)
5. That idea was not worth considering. (POINT)
6. They're too young to understand what is happening. (AWARE)
7. My brother called me from Spain last night. (GIVE)
8. We had to postpone our journey because it rained heavily. (HEAVY)
9. Why don't we go abroad for our holiday? (LET)
10. She decided to go home late although it was dangerous. (IN SPITE OF)
I. Rend the following text and use the words given in the box to fill in the blanks.
arrange | invented | later | first | on |
instead | from | was | crossword | horizontal |
Arthur Wynne's first crossword puzzle was initially called word-cross and was diamond-shaped. The name (1) _____________ switched to cross-word, and then as a result of an accidental typo the hyphen was dropped, and the name became (2) _____________.
Wynne based his crossword puzzle (3)_____________ a similar but much older game played in ancient Pompeii that translated (4) _____________Latin to English was called Magic Squares. In Magic Squares, the player is given a group of words and has to (5)_____________ them on a grid so that the words read the same way across and down.
A crossword puzzle is very similar, except (6) _____________ of being given the words the player is given clues.
Arthur Wynne added other innovations to the crossword puzzle. While the first puzzle was diamond-shaped, he later invented (7) _____________and vertical shaped puzzles; and Wynne (8)_____________ the use of adding blank black squares to a crossword puzzle.
The crossword puzzle in a British publication (9)_____________published in Pearson's Magazine in February 1922. The (10) _____________New York Times crossword was published on February 1, 1930.
Trong chiếc bàn là có hệ thống băng kép , đó là thiết bị đóng ngắt mạch điện tự động . Nó gồm 2 thanh kim loại khác nhau được tán chặt vào nhau , một đầu gắn cố định , đầu kia gắn với một thanh cứng có thể đẩy tiếp điểm ở phía trên . Khi có dong điện chạy qua băng kép quá một giới hạn nào đó , băng kép sẽ bị cong xuống tách khỏi tiếp điện và dong điện bị ngắt . Hỏi :
a) Việc chế tạo băng kép dựa trên cơ sở tác dụng nào của dòng điện?
b) Hai tấm kim loại của băng kép có thể làm từ cùng một kim loại không ? Vì sao ?
Help me,please!