下面是关于眼和视觉、耳和听觉的叙述正确的是( )
A:遇到巨响时要赶紧闭住嘴,使咽鼓管张开
B:近视眼的晶状体曲度变大,视觉产生在视网膜前方
C:如果突然暴露在极强的噪声下,会使鼓膜破裂影响听力
D:视觉和听觉是在视网膜和耳蜗产生的
圈一圈,数一数,一共有____个。
Sunny Language SchoolWe are a language school for children of 12—18. We want an assistant in the library, an English teacher, a gate- keeper, and a sports coach.