He didn't seem to mind（）the music while he was studying.

单项选择题My sister likes（）chocolate.It’s her favorite thing to eat.

A./
B.a
C.an
D.the

单项选择题Which of the following is NOT mentioned as an adaptation of large desert animals?

单项选择题Wang Hui is going to move to another room.

单项选择题Why do some people prefer to rent furniture？（）

A.Because the furniture they get in this way is new.
B.Because it saves them a lot of money.
C.Because it saves them much trouble and money.
D.Because they can always get better quality furniture in this way.

单项选择题Let's take（）of this opportunity to work hard for our country.

A.profit
B.benefit
C.interest
D.advantage

单项选择题The number 40.5 is 1,000 times greater than which of the following numbers?

单项选择题If P percent of 20 is Q , then P =?

单项选择题Precipitation that falls at Sites 1, 2, and 3 soaks into the soil until it reaches the groundwater table about 3 m below the surface. Based on Figure 3, and assuming no alteration of the precipitation, the δ18O value of present-day precipitation in the study area is closest to:

单项选择题Which of the following best explains why equal masses of O2 and CO2 at the same temperature and in the same-size vessel had different pressures? The pressure exerted by the O2 was:

单项选择题According to Study 3, as distance from the urban site increased, the annual wet deposition: