黑龙江省鹤岗市第一中学2018-2019学年高一12月月考英语试题

2018级高一学年12月份月考英语试题 第一部分：阅读理解（共两节，40 分） 第一节 （共 15 小题；每小题 2 分，共 30 分） 阅读下列短文，从每题所给的 A、B、C、D 四个选项中，选出最佳选项，并在答题卡上将该项涂黑。 A It is easier to float in the ocean than it is to float in a swimming pool. Do you know why? Ocean water is full of salt— and salt water can hold up more weight than fresh water. See for yourself! You Will Need: ● 3 cups of warm water ● Measuring cup (量杯) ● Wide-mouthed jar ● Salt ● Spoon  ● Raw (生的)potato You Will Do: 1. Pour 1.5 cups of warm water into the jar. 2. Add 1/3 cup of salt. 3. Stir(搅拌) until the salt is completely dissolved. 4. Add another 1.5 cups of water. Pour it slowly over the back of the spoon into the jar so that the two liquids will not mix together.  5. Gently place the potato into the jar. Do not drop it. What Will Happen: The potato will sink— but only halfway! Why? Salt water is heavier than fresh water, so it will stay on the bottom. The fresh water will remain on top. The potato is heavier than the fresh water, but it is lighter than the salt