The gardener usually comes on Tuesday, but last Tuesday he ____.

- ____ I tell her the truth? - Yes, you ____.

6.President Barack Obama had planned to develop high-speed rail (HSR) systems across the United States, but it has met resistance.

At noon on the fourth day of the first lunar month every year, the Koreans especially like to have _______with their family together.

It usually rains in April, but last April it ____.

什么是科学素养?化学学科核心素养包括哪几个维度?

高中化学必修课程中主题2常见的无机物及其应用规定的学生必做实验包括

普通高中化学必修课程 ()包括五个主题,分别是

测定乙醇含量实验时,设置检测器温度为____°C