温州(约28°N)某开阔平地上,正南方向有高为H的楼房,某开发商计划在该楼正北方向上再建新楼(北楼,如图所示)。为使北楼底层全年正午时刻都能获得阳光,则两楼之间的楼间距应满足的条件是( )
A:L≥H∕tan(90°-28°-23°26′)
B:L≤H∕tan(90°-28°-23°26′)
C:L≥H×tan(90°-28°-23°26′)
D:L≥H×tan(90°-28°+23°26′)
Danny:I'm hungry. ____!There is a restaurant.
Jenny: ____. I am not hungry. I don't want to eat.
Danny:Go with me,please!
Jenny:Okay!
Danny:I'm excited.
Jenny:Danny,please don't ____!Don't ____! Don't ____!
Danny:Okay!Okay!I walk.
10片钙片中CaCO3的质量为____g