[单项选择]The infant’s skin is inelastic and the upper abdomen is distended. To palpate the olive like mass most easily, the nurse palpates the epigastrium just to the right of the umbilicus at which of the following times
A. Just before the infant vomits.
B. While the infant is eating.
C. When infant is lying on the left side.
D. When the stomach is empty.

[填空题] It’’s never too early to (36) ________ your skin—or your children’’s—from the sun. The sun produces (37) ________ rays—(38) ________ A (UVA) and ultraviolet B (UVB) —that can cause short - and long—term skin damage. The immediate effects of harmful (39) ________—(40) ________, photosensitive (41) ________, and cell and (42) ________ damage—are bad enough. But (43) ________ experts believe that (44)________________. Health experts also believe that UVA may weaken the immune system. (45)________________. Using sunscreens regularly on children, for example, can reduce their risk of skin damage later in life. Sunscreens provide some protection by blocking the sun’’s rays on the skin. They are labeled with a sun protection factor (SPF): (46)________________. But no sunscreen totally blocks the sun’’s rays.

[单项选择] Most earthquakes occur within the upper 15 miles of the earth’s surface. But earthquakes can and do occur at all depths to about 460 miles. Their number decreases as the depth increases. At about 460 miles one earthquake occurs only every few years. Near the surface earthquakes may run as high as 100 in a month, but the yearly average does not vary much. In comparison with the total number of earthquakes each year, the number of disastrous earthquakes is very small. The extent of the disaster in an earthquake depends on many factors. If you carefully build a toy house with an Erector set, it will still stand no matter how much you shake the table. But if you build a toy house with a pack of cards, a slight shake of the table will make it fall. An earthquake in Agadir, Morocco, was not strong enough to be recorded on distant instruments, but it completely destroyed the city. Many stronger earthquakes have done comparatively little damage. If a building is well constructed and b
A. faulty building construction.
B. an earthquake’s strength.
C. widespread panic in earthquakes.
D. ineffective instruments.

[单项选择]What is the skin
A. Appreciated by most people.
B. An organ of the body.
C. An inactive organ.
D. Relatively unimportant.

[单项选择]