【单选题】The college student lost his life trying to save the drowning child, ________ he will always be remembered.
【单选题】Newspapers are trying to save themselves by doing the following EXCEPT ______.
A.
shifting the mix of the reports towards lifestyle. and entertainment
B.
planning more subjects relevant to daily lives and politics
C.
creating new programs on-and offiine
D.
investing in daily papers free of charge
【单选题】血浆蛋白质的等电点大多在 pH5-6 ,它们在血液中的存在形式是
【单选题】Green organizations are trying to save rain forests that have been _____ by farmers.
【单选题】With the oil price rising, these days people are trying to work close to home ____ save money on gas. [ ]
【单选题】下列选项中,( )可使旋风除尘器的效率降低。
【单选题】I really regret _____ with work and spare no time for my family. [ ]
【单选题】New ideas sometimes have to wait for years before _____.