【简答题】如果257×34>257×□,□最大可以是______,最小可以是______.(□是两位数)
【简答题】257÷26= 287÷34= 198÷36= 238÷35=
【单选题】1896 年在 ______ 举行第1届现代奥运会。
【单选题】The wanting message about the Alar apple was given ______.
C.
through an news agency
D.
through the government
【单选题】The last month report parallels that on the Alar apple scare in that ______.
A.
neither really caused worry among the public
B.
neither underwent a scientific peer review
C.
neither provided statistical supports
D.
neither aimed for the public good
【单选题】当冲突无关紧要的时候,或当冲突双方情绪极为激动,需要时间慢慢恢复平静时,可采用 _____________ 策略。
【多选题】用纳氏剂光度法测定水中氨氮的反应时间应控制在 10 ~ 30 m in 原因是:( )