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简单机械 Simple Machine

The Solar System

3 types of variables

Solar System

Simple Machine

variables

Objective questions

types and uses

目的 Purpose 1

太阳系 The Solar System

types and uses

变数variables

科学程序技能 sps

太阳系 The Solar System

太阳系 The Solar System

uses of pulley

目的 purpose 2

concept of pulley

nose                  diaphragm        trachea                         respiratory            inhale               exhale             mouth               oxygen             carbon dioxide            upwards            downwards                 bronchi   

1.Choose the right word and fill in the blanks. Some words might be used more than once.

1.选择正确的单词并填写空白。有些词可能会被多次使用。

Planets in the Solar System