So why do we order with more reckless（）when we're using our smartphones and laptops?

He bought two books. _____________ I.

A. So was

B. So did

C. So do

A.Such, so

B.So, so

C.Such, such

D.So, such

John kept quiet about the accident ______lose his job.

A. so as to not

B. so as not to

C. so not as to

D. not so as to

—David has made great progress recently. —_______， and _______. A. So he has；so you have B. So he has；so have you C. So he has；so do you D. So has he；so you have

He bought two books. _____she.

A. So did

B. So was

C. So does

A.Such, so

B.So, so

C.Such, such

D.So, such

A.SO 和H O

B.SO 和H SO

C.SO 和H O

D.SO 和HCl

A、SO 燃烧氧化成SO

B、催化作用生成SO

C、燃煤中硫酸盐分解出SO

水溶性小的刺激性气体是

A、SO、Cl

B、二氧化氮、光气

C、氮氧化物、SO

D、甲醛、SO、NO

E、光气、Cl、SO

A. as much as that

B. so many so that

C. so serious so that

D. so much so that

Had they not been working so hard，they______(not achieve)so much.