In the standard (x,y) coordinate plane, what is the slope of a line that is perpendicular to 2x- 3y = 9 ?

单项选择题The length of a rectangle is 4 inches longer than the width. The perimeter of the rectangle is 28 inches.What is the width of the rectangle, in inches?

单项选择题James plans to __________ offers from other companies before making a decision.

单项选择题（）makes his shop different is that it offers more personal services.

A.What
B.Who
C.Whatever
D.Whoever

单项选择题99%of the time，we（）.

A.pay no attention to our gestures and body movements
B.are aware of our gestures and body movements
C.know what the meaning of other persons gestures and body movements
D.All of the above

单项选择题Doctor Reef lives a ___________ life

单项选择题Rather than ___ me, he simply got up early to wash the clothes himself

单项选择题You’ll have to be strict with your students. They quickly get_________.

单项选择题Great changes __________ in our institute in the last few years

单项选择题Many Americans worry about leisure and hurry from one activity to the next, __________ little time to stop and thinkleave

单项选择题She（）that position in the company，and she felt she was qualified.In fact,（）she was overqualified.

A.aspired to，if anything
B.inspired to，if anything
C.desired for，or anything
D.conspired for，in anything