The research mainly deals with the difficulty the students have ______ their attention pm their study all the time.
A．to focusB．to be focusedC．focusingD．focused
C

試題分析：have difficulty (in)doing sth在做某事方面有困難 the students have…為定語從句，省略了連接詞that.故選C
點評：本題重在分析句子內部結構，及句型的識別。此類題無非就是中間夾雜著從句，尤其是賓語從句，讓學生沒法分清楚內部的邏輯關系，這種能力的培養(yǎng)，需在老師的指點下，也需要學生不懂就要多問。
練習冊系列答案
相關習題

科目：高中英語 來源：不詳 題型：單選題

The boss has ________to improve the working conditions in the company.
A．allowedB．acceptedC．permittedD．agreed

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

A healthy life is frequently thought to be _____ with the open countryside and home-grown food.
A．tiedB．associatedC．involved D．related

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

You may use the room as you like,______ you clean it up afterwards.
A．as thoughB．so long asC．now thatD．as far as

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Some students interested in biology have _____________to the classroom with electric facilities.
A．exitB．accessC．rightD．enterance

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

If you have the chance to take charge of the department, the first thing to do is to find out what _______ of you.
A．will needB．will require
C．is neededD．is required

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

—Does the young man standing there________ the company?
—No.The company is________ his father.
A．have possession of；in the possession of
B．in possession of；in the possession of
C．take possession of；in possession of
D．have possession of；in possession of

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Can you _____ your father in the old photo?
A．sort outB．pick outC．work outD．break out

查看答案和解析>>

同步練習冊答案