Listen to the tape and decide whether (A) or (B) should be the one you hear.Look at the ______.
A. red COAT(=red article of clothing)
B. RED coat (=a British soldier in the 18th and 19th centuries)
查看答案
Listen to the tape and decide whether (A) or (B) should be the one you hear.I've always wanted a ______.
A. green HOUSE(=house painted green)
B. GREENHOUSE(=glass house for growing plants)
Listen to the tape and decide whether (A) or (B) should be the one you hear.My father is a successful ______.
A. head DOCTOR ( =chief of staff)
B. HEAD doctor (=psychiatrist)
Listen to the tape and decide whether (A) or (B) should be the one you hear.She is always using _____.
A. cold CREAM (= well-chilled cream)
B. COLD cream (= face cream)
康普顿效应的主要特点是[ ]
A. 散射光的波长均比入射光的波长短,且随散射角增大而减小,但与散射体的性质无关.
B. 散射光的波长均与入射光的波长相同,与散射角、散射体性质无关.
C. 散射光中既有与入射光波长相同的,也有比入射光波长长的和比入射光波长短的.这与散射体性质有关.
D. 散射光中有些波长比入射光的波长长,且随散射角增大而增大,有些散射光波长与入射光波长相同.这都与散射体的性质无关.