单选题 The issue of how to talk to students becomes 1 when teachers are giving their instructions. The best 2 in the world is a waste of time if the students don"t understand what it is they 3 to do.
There are two 4 rules for giving instructions: they must be kept as 5 as possible, and they must be 6 . Before giving instructions, therefore, teachers must ask themselves the following questions: What is the important information I am trying to 7 ? What must the students know if they are to complete the activity successfully? Which information do they need first? Which should come next?
When teachers give instructions, it is important for them to check that the students have understood 8 they are being asked to do. This can be achieved either by asking a student to explain the activity after the teacher has given the instruction or 9 getting someone to show the other people in the class how the exercise works. Where students all share the mother tongue, a member of the class can be asked to 10 the instructions as a check that they have understood them.

【正确答案】 A

【答案解析】[解析] crucial“重要的，至关紧要的”；exciting“令人兴奋的，使人激动的”；frightened“害怕的，受惊的”；necessary“必要的，必需的”。句意：当教师发出指令时，怎样和学生交流成为至关重要的问题。

【正确答案】 C

【答案解析】[解析] complex“复杂的”；natural“自然的，不做作的”；simple“简单的”；understandable“可以理解的”。空格前的they指代instructions。教学指令应尽可能简单，故选C。

【正确答案】 A

【答案解析】[解析] logical“合逻辑的，合理的”；fluent“流利的，流畅的”；perfect“完美的，最好的”；easy“容易的”。教学指令应合理，故选A。

【正确答案】 C

【答案解析】[解析] 本句话提到“所有学生说同一种母语的班级”，因此强调的是学生的语言方面，因此选C，可以要求一些学生翻译教学指令，以检查他们是否理解教学指令。