单项选择题

______ in the company for three years, Mark has become experienced in business negotiations.

A．Having worked
B．Have been worked
C．Have worked
D．Worked
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单项选择题
A．describeB．generalizeC．categorizeD．change
A．describe
B．generalize
C．categorize
D．change
问答题
下面是一篇阅读课的教学片段，请用中文从以下三个方面进行简要评析。1．教学方法；2．学生角色；3．教学活动。教学片段：T: (通过课件呈现图片)Look at the picture. What can you see in the pictureS1: I can see two butterflies a sun a bird a river.T: Are they beautiful It s a beautiful spring.教师引导学生用不同声调绘声绘色地朗读“Spring, spring. It s spring”。T: How is the weather in springSs: It s warm.T: It s spring. It s warm. What do you like to do in springS1: I like to play basketball.S2: I like to have a picnic.S3: I like to fly a kite.教师教学词组fly a kite，并板书。学生边做动作边操练：I like to fly a kite. I like to go shopping go fishing take a picture climb mountains...然后学生在板书“It s... It s... I like to...”引导下，练习说出诸如“It s spring. It s warm. I like to fly a kite.”的句子。教师用同样的方法教学summer, fall, winter等单词，然后过渡到对句型“It s... It s... I like to...”的操练，最后过渡到拓展短文My Favorite Season的阅读。学生的阅读进行得很顺利，对教师提出的问题也能轻松作答。
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