CY A: P=[P20℃（273+t）]/293 B: P=[P20℃（273+t）]/273 C: P=P20℃293/（273+t）
CY A: P=[P20℃（273+t）]/293 B: P=[P20℃（273+t）]/273 C: P=P20℃293/（273+t）
png的最优值是（） A: -2 B: -6 C: -45/4 D: -7
png的最优值是（） A: -2 B: -6 C: -45/4 D: -7
Which of the following statements is accurate？ A: We can use finger letters to communicate with deaf friends from England. B: Deaf friends learn English by finger letters C: Finger letters are universal. D: Deaf friends don't have to learn English.
Which of the following statements is accurate？ A: We can use finger letters to communicate with deaf friends from England. B: Deaf friends learn English by finger letters C: Finger letters are universal. D: Deaf friends don't have to learn English.
20. They were deaf ________ the music. A: at B: to C: for D: with
20. They were deaf ________ the music. A: at B: to C: for D: with
She spoke to me as if I _______ deaf
She spoke to me as if I _______ deaf
He set up a school for _______ deaf and _______ dumb.
He set up a school for _______ deaf and _______ dumb.
The shop owner ______a deaf ear to the unreasonable demand. A: turned B: had
The shop owner ______a deaf ear to the unreasonable demand. A: turned B: had
I advised __________ ,but he turned me a deaf ear.
I advised __________ ,but he turned me a deaf ear.
People are born blind and deaf can exhibit laughter.
People are born blind and deaf can exhibit laughter.
I gave him a warning, ____ he turned a deaf ear.
I gave him a warning, ____ he turned a deaf ear.