根Last we come to "sorry".This can be so hard to say.(最后我们来谈谈"对不起"。这很难说出口。)可知,很难说出口的是"对不起"。故选D。(2)主旨大意题。根据Remember the magic words Start with"please",then say""thank you".(记住神奇的话语:先说"请",然后说"谢谢"。)Last we come to "...
A paper published in the Proceedings of the National Academy of Sciences found that dogs’ faces are structured for complex expression in a way that wolves’ aren’t. For the study, a team looked at two muscles (the RAOL and LAOM muscles) that work together to wide...
What are all values of x for which $$\int_x^2 t^3 \; dt $$ is equal to 0? (A) 2 only (B) -2 and 2 (C) -2 only (D) 0 only Definite Integral: An integral is the anti-derivative of a function. There are two types of integral...
The expression cube root of (x^3 y^4) = x^r y^s where x and y are nonnegative real numbers. Find the values of r and s. Using r (t) = < t, 1, 1 >, show that ||r (t)||' not equal to ||r'(t)||. Which of the following functions can...