[简答题]The aircraft exhibition will be open seven days a week from 9 am to 6 p.m.

[填空题]A week has seven days. ______ seven days in a week.

[填空题]A week has seven days． ______ seven days in a week。

[填空题]A week has seven days.
______ seven days in a week.

[填空题]A week has seven days．
______ seven days in a week。

[简答题]A week has seven days.
______ seven days in a week.

[单项选择]If task A has seven days of free float and 15 days of total float and the early start date is delayed 5 days, what does this do to the completion date of the project

[简答题] a day, seven days a week, 365 days a year, our Helpline on advisors

[简答题]Seven days later the police launched another rescue attempt.

[单项选择]For how many hours is the art exhibition open （）
A. Eight hours.
B. Seven hours.
C. Nine hours.
D. Ten hours.

[填空题]When are post offices usually open
Five days a week and__________.

[单项选择] D

"In only six days I lost seven pounds of weight."
"Two full inches in the first three days!"
These are the kinds of statements used in magazine, newspaper, radio and television ads, promising new shapes and new looks to those who buy the medicine or the device. The promoters of products say they can shape the legs, slim the face, smooth wrinkles, or in some other ways to add to beauty or desirability.
Often such products are nothing more than money-making things for their promoters. The results they produce are questionable, and some are dangerous to health.
To understand how these products can be legally promoted to the public, it is necessary to understand something of the laws covering their regulation. If the product is a drug, FDA (Food and Drug Administration)can require proof (证明)under the Food, Drug, and Cosmetic Act that is safe and effective before it is put on the market. But if the prod
A. C．The production of a device must be approved by FD