[单项选择]Container-grown plants can be planted at any time of the year, but （） in winter.
A. should be
B. would be
C. preferred
D. preferably

[单项选择]Container-grown plants can be planted at any time of the year, but ________in winter.
A. should be
B. would be
C. preferred
D. preferably

[单项选择]A person can visit a ( ) at any time or at any point in the discussion and enter the conversation by responding to a question or posting his or her own article.
A. FTP
B. E-mail
C. WWW
D. newsgroup

[单项选择]"Any time, any place, any path, any pace" is______.
A. what taken as the guiding principle of the Florida Virtual School
B. words placed at the beginning of a book or a chapter
C. a slogan put on the wall
D. words used in advertisements

[单项选择]Plants can absorb the carbon dioxide through their ______ during the sunlight hours and produce oxygen which human beings need to survive.
A. slots
B. hoses
C. pores
D. sponges

[单项选择]

Even plants can run a fever, especially when they’re under attack by insects or disease. But unlike humans, plants can have their temperature taken from 3, 000 feet away-straight up. A decade ago, adapting the infrared scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide spraying rather than rain poison on a whole field, which invariably includes plants that don’t have pest problems. Even better, Paley’s Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3, 000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded map showing where plants were running" fevers". Farmers could then spot-spray, using 50 to 70 percent less p
A. estimate the damage to the crops
B. draw a color-coded map
C. measure the size of the affected area
D. locate the problem area

[单项选择]Why do Americans love time[A] They think time can bring money and a lot of things.[B] They hope they can live longer.[C] They don't need to work very hard.

[单项选择]"When can we come to visit you""Any time you feel ______"
A. like it
B. for it
C. to
D. so

[判断题]Time can be saved by deciding on a format which suits you and then keeping a pile of blanks.（）

[单项选择]The shoot system of perennials can help the plants absorb less of the sun's ray.

[单项选择]Anyone who wants to can call any timepiece a clock, but technically speaking, only ______ one rings out the time actually deserves the name.
A. whichever
B. whatever
C. whenever
D. wherever

[单项选择]I can see some spoons, but I can't see any