[单项选择]The ________ runner can run 2 miles in fifteen minutes.
A. common
B. usual
C. average
D. general

[单项选择]An ______ runner can run 2 miles in fifteen minutes.
A. common
B. usual
C. average
D. general

[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] A non-root user can run rsh commands from serverA to serverB, but attempts to run rsh commands by the root user return with apermission error message. What action will resolve the problem?（）
A. Add root user to the /etc/hosts.equiv on serverB
B. Create $HOME/.rhosts file for the root user on serverB
C. Restart the rshd daemon with root enabled option on serverB
D. Add entry to allow root user from serverA to the /etc/hosts.allow on serverB

[单项选择]Lucy can run as ________as Jim.

[单项选择]All modern （） are multitasking and can support running several processes simultaneously.
A. database
B. operating system
C. MIS
D. DOS

[单项选择]Hydrofoils can exceed 75 miles per hour, as compared with conventional watercraft, whose maximum speeds .......... approach 50 miles per hour.
A. ( are rarely
B. ( rarely
C. ( of rarely
D. ( they rarely

[单项选择]The modem __ long pencil can draw a line 35 miles in length.
A. 7-inched
B. 7-inch
C. 7-inchs
D. 7-inches

[单项选择]You (can see) the whole city (for miles) (from here) (in) a clear day.
A. can see
B. for miles
C. from here
D. in

[单项选择]The batteries can be recharged when they run ______ .
A. over
B. down
C. out
D. along

[单项选择]He can't run a hundred yards, ______ a mile.
A. less than
B. still less
C. no less
D. less even

[单项选择]The horse is getting old and can't run ______ it did.
A. as faster as
B. so fast than
C. so faster as
D. as fast as