更多"Why are weedy plants a source of tr"的相关试题:
[单项选择]Why wouldn't drug companies be interested in weedy plants
[单项选择]According to Prof. Stepp, weedy plants are ______.
A. fast-growing and woody-tissued
B. slow-growing and soft-tissued
C. growing wild
D. growing where it is not wanted
[单项选择]The nurse is interviewing a client about his medical history. Which preexisting condition may lead the nurse to suspect that a client has colorectal cancer
A. Duodenal ulcers.
B. Hemorrhoids.
C. Weight gain.
D. Polyps.
[单项选择]The doctor told him that he should take this medicine one pill at one time.
A. told
B. should take
C. one
D. one
[单项选择]The duty of the American Council on graduate medical education is to
A. Authorize further training programs and exams.
B. reexamine physicians at a defined interval.
C. give further medical training to medical school graduates.
D. provide further training to specialists.
[单项选择]Doctors sometimes ______old cures when modem medicine doesn't work.
A. fall on
B. fall down on
C. fall back on
D. fall in upon
[单项选择]Drugs like opium have been ______ except for medical purposes.
A. outlawed
B. forbidden
C. shunned
D. prohibited
[单项选择]Why are laws formed
[单项选择]Why is transition difficult
A. Because transition requires money and time.
B. Because many manufacturers are unwilling to change their equipment.
C. Because research on new materials is very difficult.
D. Because it takes long time.
[单项选择]Why was hemp banned
A. It is related to the marijuana plant.
B. It can be used to produce marijuana.
C. It was not longer a useful crop.
D. It was destructive to the land.
[单项选择]Why is music important
A. It can arouse excitement
B. It can help to slow down body rhythms
C. It can make people eager to study
D. It makes people used to the passive learning
[单项选择]Why do Americans love time
[单项选择]Why are there problem weeds
A. Because they are the weeds that cannot be eradicated by herbicides.
B. Because all selective herbicides can encourage the growth of previously unimportant weeds by eliminating their competitors.
C. Because they were hardly considered before so that their seeds were not prevented from germinating.
D. Because they benefit greatly from the fertilizer applied to the farm lan
[单项选择]Why are upright pianos popular
A. Jazz and popular music sound better on them.
B. They sound as good as grand pianos.
C. They are easy to move around.
D. They occupy space.
[单项选择]Why should you check newspapers
