[单项选择]In winter drivers have trouble stopping their cars from ______ on icy roads.
A. skating
B. skidding
C. sliding
D. slipping

[单项选择]In winter drivers have trouble stopping their cars from_______on icy roads.
A. skating
B. skidding
C. sliding
D. slipping

[单项选择]You can never imagine what great trouble I have had （　） the patient who received a serious wound
A. treat      
B. to treat    
C. treating    
D. treated

[单项选择]What trouble does the woman have
A. She doesn’t know where she can get a tape.
B. She has lost her tape.
C. She wants to change the tape.

[填空题]Severe winter storms have worsened the nation’s usual post-holiday blood shortage, prompting an urgent call today for people to donate blood. Type O blood is the most urgently needed, because it is the universal blood type, meaning it can be safely transfused to most people in an emergency. "The severe winter weather has forced the cancellation of blood drives and limited our ability to collect blood," American Red Cross President Elizabeth Dole said. The Red Cross reported having less than one day’s supply of Type O blood on hand in 18 of the organization’s 38 collection regions. The Red Cross provides about half of the nation’s blood supply. America’s Blood Centers, which supplies most of the rest, also has reported shortages.
Reacting to the shortage, a Pittsburgh blood bank asked 40 hospitals in western Pennsylvania, West Virginia and Ohio to postpone elective surgeries through Wednesday. At least 1,000 donors are needed each day for the next several days to stabilize the su

[填空题]

What has been done to have fewer cars on the freeways Asking several people to ______.