请教几个问题（商务）

Our park is located immediately to the highway. The transportation here are very convenient.请问这句话有没有语法错误呢？
***有语法错误。第一，表示“紧邻高速公路”应该说...is close to the highway或...is located closed to the highway较能形象地强调地理位置，而immediately多用于表示时间上或逻辑上的紧凑，而不是空间上的。第二，are very convenient应该把are 改为is，才和主语对应。
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什么是MD？在做BEC的题的时有时会碰到

***商务英语中说到的MD=Managing Director 中文一般翻译为“常务董事经理”或者“董事经理”或者“总经理”，他和General Manager“总经理”的区别在于，简单地说，MD管的事情比较多。
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The economy barely grew in the first quarter after two quarters of_____
A. contraction B. depression C. deduction D. deflation
为什么选A不选B呢？
***个人认为A和B两个选择都应该是正确的。因为查查英英或英汉字典，它们在字典上的解释几乎是一样的：
Contraction: A period of decreased business activity.
萧条时期商业活动减少的一段时期

Depression: A period of drastic decline in a national or international economy, characterized by decreasing business activity, falling prices, and unemployment.
萧条，不景气；国家（或国际）经济不景气的一段时期，其特征是商业活动减