32．___________the many ways illegal immigrants come into the United States every year, the vehicle crammed with crowds seems to be the method of choice lately, however, tragedies such as deaths on the journey to the destination, are sometimes reported nowadays．

We went right round to the west coast by ______ sea instead of driving across ______ continent.

1864年，李鸿章提出：“欲学习外国利器，则莫如觅制器之器，师其法而不必尽用其人。欲觅制器之器，与制器之人，”则我专设一科取士……而才亦可集。”材料表明李鸿章意在（    ）

实验室需要0.1mol•L^﹣1NaOH溶液450mL和0.5mol•L^﹣1硫酸溶液500mL．根据这两种溶液的配制情况回答下列问题：

由2—氯丙烷为主要原料制1，2—丙二醇CH₃CH(OH)CH₂OH时，经过的反应为 （ ）