A car travels at a rate of 50 miles per hour.How long will it take to travel 300 miles（） A: 250hours B: 6hours C: 1/6hours D: 15000hours

Questions 95-97 refer to the following traffic information. How long will be the three section highway closed A: 4 hours B: 6 hours C: 7 hours D: 8 hours

6【判断题】 She practices 5 to 7 hours a day.

CONVERSATION 2 (Questions 5-8)The woman is working at the campus（5） office.The man can work at least（6） hours a week but not more than （7）hours a week from（8） on. (6) should be filled in （）

Many boys and girls spend_______. A: 4 hours on TV shows on Sunday B: 6 hours on Ty shows every day C: many hours a day in front of the TV sets D: all their time on TV shows

The office hours are ____9 a.m. ____ 6 p.m. A: in, to B: from, to C: for, at D: from, at

When will Jimmy ring again probably A: 4. B: 6. C: 6 hours later.

She 1________ 5 -7 hours a day,and 2 _______ 6 days a week for many years.

It is best not to eat or drink for 6–8 hours before your surgery. A: 手术 B: 外科 C: 化疗

Q: How many hours is the flight from Toronto to Beijing? A: 18 hours B: 28 hours C: 20 hours D: 19 hours