To construct a working still, use a sharp stick or rock to dig a hole four feet across and three feet deep. Try to make the hole in a damp area to increasethe water catcher’sproductivity. Place your cup in the deepest part of the hole. Then lay the tube in place so that one end rests all the way in the cup and the rest of the line runs up — and out — the side of the hole.

　　Next, cover the hole with the plastic sheet, securing the edges of the plastic with dirt and weighting the sheet’s center down with a rock. The plastic should now form a cone(圆锥体) with 45-degree-angled sides. The low point of the sheet must be centered directly over, and no more than three inches above, the cup.

　　The solar still works by creating a greenhouse under the plastic. Ground water evaporates (蒸发) and collects on the sheet until small drops of water form, run down the material and fall off into the cup. When the container is full, you can suck the refreshment out through the tube, and won’t have to break down the still every time you need a drink.

　　32.What do we know about the solar still equipment from the first paragraph?

　　A.It’s delicate.

　　B.It’s expensive.

　　C.It’s complex.

　　D.It’s portable.

　　33.What does the underlined phrase “the water catcher” in paragraph 2 refer to?

　　A.The tube.

【2017年高考全国Ⅰ卷英语试题（Word版含答案）】相关文章：

★ 河北省石家庄市第一中学2016-2017学年高一上学期期末考试 英语试题 Word版含答案

★ 辽宁省朝阳市重点高中协作校2015届高三上学期期中考试试卷 英语 Word版含答案

★ 2017年高考全国Ⅱ卷英语试题（Word版含答案）

★ 上海市宝山区2015届高三上学期期末质量监测英语试卷（文档版，含答案）

★ 山西省康杰中学2017-2017学年高一12月月考英语试题 Word版含答案

★ 重庆市杨家坪中学2017-2017学年高一上学期期中考试英语试题 Word版含答案

★ 山东省潍坊市某区县2017-2017学年高一上学期期中考试 英语 Word版含答案

★ 陕西省西安市长安一中2017-2017学年高一上学期期中考试英语试题 Word版含答案

★ 江苏省扬州中学2015届高三上学期质量检测（12月）试卷 英语 Word版含答案

★ 辽宁省沈阳铁路实验中学2016-2017学年高一上学期第二次月考 英语试题 Word版含答案