根据物质的量知识判断，所提供的物质中含原子个数最多的是（ ） A．18gH2O

词语填空（共10小题，计10分）
用方框中所给单词的适当形式填空，使短文通顺、正确、连贯（每个单词限用一次）。

however    before   name   well    worst     notice      also     twice   and     give

Naming the Baby
Parents always think their babies are very special. They want others to   小题1:  their children. For this reason, they sometimes give their children unusual   小题2:. They may choose names such as Chelma, Ukiah, Brianna, or Elvira. There are some advantages to this practice. A child who is  小题3: an uncommon name may feel special from childhood.   小题4: , sometimes we remember people with unusual names   小题5:  than we remember people with ordinary names.
小题6: , unusual names can cause problems. They can be hard for teachers and friends to pronounce. They can also be hard to spell,   小题7:  computers may automatically(自动地) change them. For example, Jule may become July. Some people may have a bad impression on an unusual name  小题8:  they even meet the person.  小题9: of all, other children sometimes don’t like kids with uncommon names. The message for parents is, “Think  小题10: before you give your child an unusual name.”