The novelist John Steinbeck is mentioned in line 14 because he（） A: conducted a scientific study on the behavior of ospreys B: was the first to describe where ospreys built their nests C: described the materials ospreys can use to build their nests D: compared the size of osprey nests with the nests of other species

The scientist's work was based on _______. A: occasional observations B: systematic observations C: observations of several nests D: observations of undisturbed nests

The scientist's work was based on______. A: occasional observations B: systematic observations C: observations of several nests D: observations of an undisturbed nest

Questions 29 and 30 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions. Now, listen to the news. To monitor the eagles’ health, the State will______. A: remove the bird from the Endangered Species List B: pass the Bald and Golden Eagle Protection Act C: watch over a few dozen nests D: prohibit killing, selling or otherwise harming bald eagles

A 40-year-old woman has noted enlargement of her anterior neck region over the past 8 months. On physical examination her vital signs include T 36.8°C， P 64/minute， RR 16/minute， and BP 155/105 mm Hg. There is diffuse， symmetrical thyroid enlargement without tenderness. A chest radiograph is normal. Fine needle aspiration of the thyroid yields cells consistent with a neoplasm. Laboratory studies show that she is euthyroid， but her serum ionized calcium is elevated. She is taken to surgery and frozen sections of several thyroid masses show a malignant neoplasm composed of polygonal cells in nests. A thyroidectomy is performed. Immunostaining for calcitonin of the permanent sections is positive， and the neoplasm has an amyloid stroma with Congo red staining. Which of the following neoplasms is she most likely to have？（ ） A: Anaplastic carcinoma B: Medullary carcinoma C: Papillary thyroid carcinoma D: Metastatic renal cell carcinoma E: Parathyroid carcinoma