[单项选择]All the arrangements should have been completed prior________ our departure.
A. in
B. to
C. by
D. before

[单项选择]All the arrangements should have been completed prior________ our departure.
A. in
B. to
C. by
D. before

[单项选择]All the arrangements should be completed ______ your departure.
A. prior to
B. superior to
C. contrary to
D. parallel to

[简答题]All the arrangements should be completed________________(在你离开之前) .

[简答题]This work should have been finished yesterday________________(我已经大大地落后了) .

[单项选择]You should have been more patient ______ that customer; I’m sure that selling him the watch was a possibility.
A. of
B. with
C. for
D. at

[单项选择]You should have been more patient ________ that customer; I’m sure that selling him the watch was a possibility.
A. of
B. with
C. for
D. at

[单项选择]Calories
For years now, calories have been all the rage—people are counting them and cutting them, and you’d be hard-pressed to find something at the supermarket that does not list its calories per serving somewhere on the package. But have you ever wondered what exactly a calorie is
What Is a Calorie
A calorie is a unit of energy. We tend to associate calories with food, but they apply to anything containing energy. For example, a gallon (about 4 liters) of gasoline contains about 31,000,000 calories.
Specifically, a calorie is the amount of energy, or heat, it takes to raise the temperature of 1 gram of water 1 degree Celsius (1.8 degrees Fahrenheit). One calorie is equal to 4.184 joules (焦耳), a common unit of energy used in the physical sciences. Most of us think of calories in relation to food, as in "This can of soda has 200 calories." It turns out that the calories on a food package are actually kilocalories (1,000 calories=1 kilocalori
A. how much energy that food contains
B. the compilation of these three building blocks
C. how the energy is acquired
D. where does the food come from

[单项选择]Many scientists have been probing psychological problems.
A. solving
B. exploring
C. settling
D. handling

[单项选择]Calories
For years now, calories have been all the rage—people are counting them and cutting them, and you’d be hard-pressed to find something at the supermarket that does not list its calories per serving somewhere on the package. But have you ever wondered what exactly a calorie is
What Is a CalorieAs a unit, what does calorie apply to
A) Food. C) A gallon of gasoline.
B) Anything containing energy. D) Exercise.