【单选题】There are twelve ______ in a year.
【单选题】It’s reported that the price of meat this month is ______ that of last month.
【单选题】The baby is only ten old. [ ]
【判断题】价键理论可以说明配离子的成键、空间构型及解释配离子的颜色;
【单选题】How much is the accommodation agency's fee for Mr Garcia?