罗马人修筑拱券反映了对（）的偏爱。
A、四方形
B、三角形
C、圆形
D、菱形
参考答案：C
They have a beer together _____, talking about their separate life, but not often.[ ]
A. by and by
B. now and then
C. all the time
D. more or less
土耳其扁谷盗体形、大小与长角扁谷盗相似，主要区别是：土耳其扁谷盗身体（）色，雄虫触角末端三节两侧向端部略扩张；前胸背板近方形，后缘角较尖；两鞘翅的长度约为宽度的2倍。
A、赤褐
B、黑褐
C、淡白
D、淡黄
lking about their separate life, but not often.[ ]