The difference in thickness and weight from the earlier version makes the iPad2 more comfortable_______.

SARS is an illness that can result in death unless left      in time.

（2014届江西省重点中学盟校高三第二次联考英语试卷）32. The new technology, if _____to rice growing, will help increase the grain output．

___ the project as planned, we’ll have to work two more hours a day.

So far all cloned animals have suffered from some different serious disorders, _______ dying soon after birth.