C)They had declined for five years.-|||-B)They had risen for almost two decades. __ D)They had risen for five years.-|||-10.A)It did not examine teens'use of smartphones.-|||-B)It involves many other possible influencing fact-|||-C)It proves the serious influence of social media on teen suicide.-|||-D)It provides weak evidence for social media influencing teen suicide.-|||-11.A)They are the main factors influencing teen suicide.-|||-B)They are being unfairly criticized-|||-C)Kids should be forbidden to use them.-|||-D)Kids'use of them should be reasonably limited.

[单选题]A．) phonedB．) faxedC．) had phonedD．) had faxed

By 2011, the standard had risen to 2,300 yuan.Between 1978 and 2017, China helpe

Almost ______had changed.A. nothingB. anythingC. somethingD. everything

[单选题]The last time we had a family reunion was( )my sister’s wedding ceremony fi

I had had ________ as a baby,and had difficulty in _______.（ ）A. polio,walkingB.

[主观题]I had worn out two pairs of boots on the walking tour , I needed a third one (疑问：此处的a third 能不能换成the third ）谢谢

[单选题]C．A． few years ago I had an “aha!” moment regarding handwriting.I had in my hand a sheet of paper with handwritten instructions on it for some sort of editorial task. It occurred at first that I did not recognize the handwriting，and then I realized w

They talked to each other _____ they had been friends for years.Theytalkedtoeach

She had been at the company for 10 years and knew all the __.A. ins and outsB. u

5 ,-|||-the number of snakes had declined as well.He 6 -|||-that it was becaus