题目内容
【题目】世界每年因锈蚀而损失的金属数量巨大，防止金属锈蚀已成为科学研究中的重大问题．下列有关金属锈蚀与保护的措施中不正确的是（ ）
A．铁锈蚀的实质是铁与空气中的氧气、水蒸气等发生了化学变化
B．同样的铁制品在海南比兰州更易锈蚀
C．在铁表面刷油漆可以防止铁锈蚀
D．铝的抗腐蚀性能比铁强，生活中可用钢丝球洗刷铝锅
【答案】D
【解析】铁在空气中锈蚀，实际上是铁跟氧气、水等物质相互作用，发生一系列复杂的化学反应，使铁转化为铁的化合物的过程，A正确；海南的空气潮湿，兰州的空气干燥，因此B正确；在铁表面刷油漆，既隔绝空气又防水，可防止铁锈蚀，C正确；用钢丝球洗刷铝制品，会把铝表面的致密氧化膜除掉，从而失去保护作用，D不正确．
【题目】词语运用（10小题，每小题1分，共10分）
先阅读短文，掌握其大意。然后从方框中所给的词中选出恰当的10个，并用其适当形式填空，每个词限用一次。（每小题1分）
quiet rain on however so walk they but smell enjoyable |
I live in a small 1 nice village. I love it because it’s 2 , and there are a lot of trees. My friends and I often play football 3 the field near my house. 4 , after it 5 , the field is too wet to play on. We like to 6 along the river. We can 7 the flowers and listen to the birds. It is very 8 . My village is a comfortable place to live in. When my friends come to visit, I always have 9 much to show 10 .