烹制牛、羊肉的五种火候中，M.W指的是
A．三成熟
B．五成熟
C．七成熟
D．全熟
参考答案：C
After a week，he_______ good ideas to solve the problems.
A．caught up with
B．came up with
C．ended up with
D．followed up with
设等差数列{an}的公差为2，且a10=10，则a1+a2+…+a10=______．
