86. what is the main topic of the passage?
a) the mechanics of rain.
b) the climate of north america.
c) how gravity affects air current.
d) types of clouds.
87. the word "minute"in line 5 is closest in meaning to which for the
following?
a) second. b) tiny. c) smooth. d) predictable.
88. why don't all ice crystals in clouds immediately fall to earth?
a) they are balanced by the pressure of rain droplets.
b) the effect of gravity at high altitude is random.
c) they are kept in the sky by air currents.
d) they are moving about without fixed directions.
89. what can be inferred about drops of water larger than 1/125 inch
in diameter?
a) they never occur.
b) they are not affected by the force of gravity.
c) in still air they would fall to earth.
d) in moving air they fall at a speed of thirty-two miles per hour.
90. in this passage, what does the term "coalescence" (in paragraph 2)refer to?
a) the gathering of small clouds to form larger clouds.
b) the growth of droplets.
c) the fall of raindrops and other precipitation.
d) the movement of dust particles in the sunlight.
writing
directions: for this part, you are allowed 30 minutes to write a compositionon reading -- the best means to acquire knowledge in three paragraphs. youare given the main idea of each paragraph in chinese. you are required todevelop these ideas in english. your composition should be no less than 120words. remember to write clearly.
a) the mechanics of rain.
b) the climate of north america.
c) how gravity affects air current.
d) types of clouds.
87. the word "minute"in line 5 is closest in meaning to which for the
following?
a) second. b) tiny. c) smooth. d) predictable.
88. why don't all ice crystals in clouds immediately fall to earth?
a) they are balanced by the pressure of rain droplets.
b) the effect of gravity at high altitude is random.
c) they are kept in the sky by air currents.
d) they are moving about without fixed directions.
89. what can be inferred about drops of water larger than 1/125 inch
in diameter?
a) they never occur.
b) they are not affected by the force of gravity.
c) in still air they would fall to earth.
d) in moving air they fall at a speed of thirty-two miles per hour.
90. in this passage, what does the term "coalescence" (in paragraph 2)refer to?
a) the gathering of small clouds to form larger clouds.
b) the growth of droplets.
c) the fall of raindrops and other precipitation.
d) the movement of dust particles in the sunlight.
writing
directions: for this part, you are allowed 30 minutes to write a compositionon reading -- the best means to acquire knowledge in three paragraphs. youare given the main idea of each paragraph in chinese. you are required todevelop these ideas in english. your composition should be no less than 120words. remember to write clearly.