【判断题】There are ten units in this course.
【多选题】关于蛋白质营养价值的评价,正确的是()
A.
生物学价值的高低取决于食物中必需氨基酸的含量和比值
B.
谷类的第一限制氨基酸为蛋氨酸,豆类为赖氨酸,两者混合使用可提高生物的生学价值
D.
一般而言,动物蛋白的消化率、生物学 价值都高于植物蛋白
【简答题】选择合适的疑问词完成句子。 what colour how what how many 1. — _____ birds are there? — There are ten. 2. — _____ is the cat? — It's black. 3. — _____is his name? — Jack. 4. — _____ do you spell 'bana...
【单选题】There are ten () in our school.
【单选题】要使时钟控件的Timer事件每隔3s发生一次,应把它的Interva1属性设置为( )。
【单选题】You can _____ this cake _____ten pieces. There are ten persons in this room.
【单选题】Nowadays, smallpox investigations are only carried out______.
A.
at regular two-year intervals
B.
when news of an outbreak occurs
C.
in those areas with previous history of the disease
D.
by trained professionals
【判断题】()原子吸收光谱分析中灯电流的选择原则是:在保证放电稳定的情况下,尽量选用高的工作电流,以得到足够的光强度。
【单选题】There are ten stories in this book,______are the most interesting ones.
A.
the first four of them
B.
the first four of those
D.
the first four of which
【单选题】He comes back to his hometown to see his parents at regular ______.