英语四级考试真题试卷.docx

n pressurefound in an aircraft cabin is __29__ to that at 6,000-8,000 feet of altitude. A drop inoxygen pressure can cause headaches in certain __30__ To help prevent headaches, drink plenty of water, and avoid alcohol and coffee.










Aiplane food might not really be as tateless as you __31__ thought. The air you breathein a plane dries out your mouth and nose, which can affect your sense of taste. Perception of sweet and salty foods dropped by almost 30 percent in a simulation of airtravel. However, you can make your taste buds active again by drinking water. A drymouth may __32__ taste sensitivity, but taste is restored by drinking fluids.
Although in-flight infections __33__ in dry environments like airplanes, your risk ofgetting sick from an airplane is actually low because of the air __34__ used. Unless youre stting next to someone who is coughing or sneezing, you shouldnt worry too muchabout getting sick. However, bacteria have been shown to live on cabin surfaces, sowash your hands __35__.
A) adjusted
B) channels
C) equivalent
D) experience
E) filters










F) frequently
G) individuals
H) originally
I) particular
J) primarily
K) reduce
L) renovated
M) smooth
N) thrive
O) unpleasant
Section B
Directions: In this section, you are going to read a passage with ten statementsattached to it. Each statement contains information given in one of the paragraphsIdentify the paragraph from which the information is derived. You may choose aparagraph mo